Home / 875,178.30-1,312,767.45-210,330.30

Finding the Fourth Proportional to 875,178.30, 1,312,767.45 and 210,330.30

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Solution

The fourth proportional to 875,178.30, 1,312,767.45 and 210,330.30 is: 315,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,178.30 : 1,312,767.45 = 210,330.30 : x
  2. Step 2: Convert to fraction form
    875,178.30/1,312,767.45 = 210,330.30/x
  3. Step 3: Cross multiply
    875,178.30x = 1,312,767.45 × 210,330.30
  4. Step 4: Simplify right side
    875,178.30x = 276,114,771,588.74
  5. Step 5: Solve for x
    x = 276,114,771,588.74/875,178.30
  6. Step 6: Final answer
    x = 315,495.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.