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Finding the Fourth Proportional to 359,752, 539,654.16 and 138,136

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Solution

The fourth proportional to 359,752, 539,654.16 and 138,136 is: 207,214.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,752 : 539,654.16 = 138,136 : x
  2. Step 2: Convert to fraction form
    359,752/539,654.16 = 138,136/x
  3. Step 3: Cross multiply
    359,752x = 539,654.16 × 138,136
  4. Step 4: Simplify right side
    359,752x = 74,545,667,045.76
  5. Step 5: Solve for x
    x = 74,545,667,045.76/359,752
  6. Step 6: Final answer
    x = 207,214.04

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.