Home / 459,010.20-688,580.10-143,434.20

Finding the Fourth Proportional to 459,010.20, 688,580.10 and 143,434.20

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Solution

The fourth proportional to 459,010.20, 688,580.10 and 143,434.20 is: 215,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,010.20 : 688,580.10 = 143,434.20 : x
  2. Step 2: Convert to fraction form
    459,010.20/688,580.10 = 143,434.20/x
  3. Step 3: Cross multiply
    459,010.20x = 688,580.10 × 143,434.20
  4. Step 4: Simplify right side
    459,010.20x = 98,765,935,779.42
  5. Step 5: Solve for x
    x = 98,765,935,779.42/459,010.20
  6. Step 6: Final answer
    x = 215,171.55

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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.