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Finding the Fourth Proportional to 354,669.90, 532,053.45 and 129,975.90

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Solution

The fourth proportional to 354,669.90, 532,053.45 and 129,975.90 is: 194,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,669.90 : 532,053.45 = 129,975.90 : x
  2. Step 2: Convert to fraction form
    354,669.90/532,053.45 = 129,975.90/x
  3. Step 3: Cross multiply
    354,669.90x = 532,053.45 × 129,975.90
  4. Step 4: Simplify right side
    354,669.90x = 69,154,126,011.86
  5. Step 5: Solve for x
    x = 69,154,126,011.86/354,669.90
  6. Step 6: Final answer
    x = 194,981.66

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1.5x scale

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.