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Finding the Fourth Proportional to 527,197.08, 727,530.66 and 285,479.64

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Solution

The fourth proportional to 527,197.08, 727,530.66 and 285,479.64 is: 393,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,197.08 : 727,530.66 = 285,479.64 : x
  2. Step 2: Convert to fraction form
    527,197.08/727,530.66 = 285,479.64/x
  3. Step 3: Cross multiply
    527,197.08x = 727,530.66 × 285,479.64
  4. Step 4: Simplify right side
    527,197.08x = 207,695,190,905.76
  5. Step 5: Solve for x
    x = 207,695,190,905.76/527,197.08
  6. Step 6: Final answer
    x = 393,961.19

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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.