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Finding the Fourth Proportional to 385,079.40, 577,657.70 and 132,326.60

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Solution

The fourth proportional to 385,079.40, 577,657.70 and 132,326.60 is: 198,503.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,079.40 : 577,657.70 = 132,326.60 : x
  2. Step 2: Convert to fraction form
    385,079.40/577,657.70 = 132,326.60/x
  3. Step 3: Cross multiply
    385,079.40x = 577,657.70 × 132,326.60
  4. Step 4: Simplify right side
    385,079.40x = 76,439,479,404.82
  5. Step 5: Solve for x
    x = 76,439,479,404.82/385,079.40
  6. Step 6: Final answer
    x = 198,503.16

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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.