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Finding the Fourth Proportional to 359,819.07, 539,730.38 and 149,457.21

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Solution

The fourth proportional to 359,819.07, 539,730.38 and 149,457.21 is: 224,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,819.07 : 539,730.38 = 149,457.21 : x
  2. Step 2: Convert to fraction form
    359,819.07/539,730.38 = 149,457.21/x
  3. Step 3: Cross multiply
    359,819.07x = 539,730.38 × 149,457.21
  4. Step 4: Simplify right side
    359,819.07x = 80,666,596,747.04
  5. Step 5: Solve for x
    x = 80,666,596,747.04/359,819.07
  6. Step 6: Final answer
    x = 224,186.55

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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.