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Finding the Fourth Proportional to 359,643.34, 539,552.64 and 119,756.78

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Solution

The fourth proportional to 359,643.34, 539,552.64 and 119,756.78 is: 179,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,643.34 : 539,552.64 = 119,756.78 : x
  2. Step 2: Convert to fraction form
    359,643.34/539,552.64 = 119,756.78/x
  3. Step 3: Cross multiply
    359,643.34x = 539,552.64 × 119,756.78
  4. Step 4: Simplify right side
    359,643.34x = 64,615,086,581.55
  5. Step 5: Solve for x
    x = 64,615,086,581.55/359,643.34
  6. Step 6: Final answer
    x = 179,664.35

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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.