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Finding the Fourth Proportional to 384,925.60, 531,200.40 and 215,166.88

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Solution

The fourth proportional to 384,925.60, 531,200.40 and 215,166.88 is: 296,932.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,925.60 : 531,200.40 = 215,166.88 : x
  2. Step 2: Convert to fraction form
    384,925.60/531,200.40 = 215,166.88/x
  3. Step 3: Cross multiply
    384,925.60x = 531,200.40 × 215,166.88
  4. Step 4: Simplify right side
    384,925.60x = 114,296,732,722.75
  5. Step 5: Solve for x
    x = 114,296,732,722.75/384,925.60
  6. Step 6: Final answer
    x = 296,932.01

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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.