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Finding the Fourth Proportional to 390,136.83, 585,088.60 and 203,046.27

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Solution

The fourth proportional to 390,136.83, 585,088.60 and 203,046.27 is: 304,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,136.83 : 585,088.60 = 203,046.27 : x
  2. Step 2: Convert to fraction form
    390,136.83/585,088.60 = 203,046.27/x
  3. Step 3: Cross multiply
    390,136.83x = 585,088.60 × 203,046.27
  4. Step 4: Simplify right side
    390,136.83x = 118,800,057,849.52
  5. Step 5: Solve for x
    x = 118,800,057,849.52/390,136.83
  6. Step 6: Final answer
    x = 304,508.70

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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.