Home / 875,190.30-1,312,785.45-210,342.30

Finding the Fourth Proportional to 875,190.30, 1,312,785.45 and 210,342.30

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Solution

The fourth proportional to 875,190.30, 1,312,785.45 and 210,342.30 is: 315,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,190.30 : 1,312,785.45 = 210,342.30 : x
  2. Step 2: Convert to fraction form
    875,190.30/1,312,785.45 = 210,342.30/x
  3. Step 3: Cross multiply
    875,190.30x = 1,312,785.45 × 210,342.30
  4. Step 4: Simplify right side
    875,190.30x = 276,134,310,959.54
  5. Step 5: Solve for x
    x = 276,134,310,959.54/875,190.30
  6. Step 6: Final answer
    x = 315,513.45

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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.