Home / 875,188.80-1,312,783.20-210,340.80

Finding the Fourth Proportional to 875,188.80, 1,312,783.20 and 210,340.80

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Solution

The fourth proportional to 875,188.80, 1,312,783.20 and 210,340.80 is: 315,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,188.80 : 1,312,783.20 = 210,340.80 : x
  2. Step 2: Convert to fraction form
    875,188.80/1,312,783.20 = 210,340.80/x
  3. Step 3: Cross multiply
    875,188.80x = 1,312,783.20 × 210,340.80
  4. Step 4: Simplify right side
    875,188.80x = 276,131,868,514.56
  5. Step 5: Solve for x
    x = 276,131,868,514.56/875,188.80
  6. Step 6: Final answer
    x = 315,511.20

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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.