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Finding the Fourth Proportional to 388,117.04, 535,601.46 and 216,031.32

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Solution

The fourth proportional to 388,117.04, 535,601.46 and 216,031.32 is: 298,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,117.04 : 535,601.46 = 216,031.32 : x
  2. Step 2: Convert to fraction form
    388,117.04/535,601.46 = 216,031.32/x
  3. Step 3: Cross multiply
    388,117.04x = 535,601.46 × 216,031.32
  4. Step 4: Simplify right side
    388,117.04x = 115,706,690,397.73
  5. Step 5: Solve for x
    x = 115,706,690,397.73/388,117.04
  6. Step 6: Final answer
    x = 298,123.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.