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Finding the Fourth Proportional to 388,931.52, 536,722.32 and 216,847.44

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Solution

The fourth proportional to 388,931.52, 536,722.32 and 216,847.44 is: 299,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,931.52 : 536,722.32 = 216,847.44 : x
  2. Step 2: Convert to fraction form
    388,931.52/536,722.32 = 216,847.44/x
  3. Step 3: Cross multiply
    388,931.52x = 536,722.32 × 216,847.44
  4. Step 4: Simplify right side
    388,931.52x = 116,386,861,082.86
  5. Step 5: Solve for x
    x = 116,386,861,082.86/388,931.52
  6. Step 6: Final answer
    x = 299,247.70

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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.