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Finding the Fourth Proportional to 459,001.70, 688,502.55 and 143,458.10

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Solution

The fourth proportional to 459,001.70, 688,502.55 and 143,458.10 is: 215,187.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,001.70 : 688,502.55 = 143,458.10 : x
  2. Step 2: Convert to fraction form
    459,001.70/688,502.55 = 143,458.10/x
  3. Step 3: Cross multiply
    459,001.70x = 688,502.55 × 143,458.10
  4. Step 4: Simplify right side
    459,001.70x = 98,771,267,668.16
  5. Step 5: Solve for x
    x = 98,771,267,668.16/459,001.70
  6. Step 6: Final answer
    x = 215,187.15

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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.