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Finding the Fourth Proportional to 385,304.70, 577,957.05 and 291,992.70

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Solution

The fourth proportional to 385,304.70, 577,957.05 and 291,992.70 is: 437,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,304.70 : 577,957.05 = 291,992.70 : x
  2. Step 2: Convert to fraction form
    385,304.70/577,957.05 = 291,992.70/x
  3. Step 3: Cross multiply
    385,304.70x = 577,957.05 × 291,992.70
  4. Step 4: Simplify right side
    385,304.70x = 168,759,239,513.54
  5. Step 5: Solve for x
    x = 168,759,239,513.54/385,304.70
  6. Step 6: Final answer
    x = 437,989.05

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Similar ratio
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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.