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Finding the Fourth Proportional to 387,872.76, 535,330.14 and 224,505.60

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Solution

The fourth proportional to 387,872.76, 535,330.14 and 224,505.60 is: 309,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,872.76 : 535,330.14 = 224,505.60 : x
  2. Step 2: Convert to fraction form
    387,872.76/535,330.14 = 224,505.60/x
  3. Step 3: Cross multiply
    387,872.76x = 535,330.14 × 224,505.60
  4. Step 4: Simplify right side
    387,872.76x = 120,184,614,278.78
  5. Step 5: Solve for x
    x = 120,184,614,278.78/387,872.76
  6. Step 6: Final answer
    x = 309,855.77

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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.