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Finding the Fourth Proportional to 459,080.40, 688,620.60 and 143,569.20

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Solution

The fourth proportional to 459,080.40, 688,620.60 and 143,569.20 is: 215,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,080.40 : 688,620.60 = 143,569.20 : x
  2. Step 2: Convert to fraction form
    459,080.40/688,620.60 = 143,569.20/x
  3. Step 3: Cross multiply
    459,080.40x = 688,620.60 × 143,569.20
  4. Step 4: Simplify right side
    459,080.40x = 98,864,708,645.52
  5. Step 5: Solve for x
    x = 98,864,708,645.52/459,080.40
  6. Step 6: Final answer
    x = 215,353.80

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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.