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Finding the Fourth Proportional to 388,364.08, 535,915.02 and 216,276.88

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Solution

The fourth proportional to 388,364.08, 535,915.02 and 216,276.88 is: 298,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,364.08 : 535,915.02 = 216,276.88 : x
  2. Step 2: Convert to fraction form
    388,364.08/535,915.02 = 216,276.88/x
  3. Step 3: Cross multiply
    388,364.08x = 535,915.02 × 216,276.88
  4. Step 4: Simplify right side
    388,364.08x = 115,906,028,470.74
  5. Step 5: Solve for x
    x = 115,906,028,470.74/388,364.08
  6. Step 6: Final answer
    x = 298,446.83

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1.5x scale

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.