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Finding the Fourth Proportional to 355,207.80, 532,811.70 and 316,500.60

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Solution

The fourth proportional to 355,207.80, 532,811.70 and 316,500.60 is: 474,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,207.80 : 532,811.70 = 316,500.60 : x
  2. Step 2: Convert to fraction form
    355,207.80/532,811.70 = 316,500.60/x
  3. Step 3: Cross multiply
    355,207.80x = 532,811.70 × 316,500.60
  4. Step 4: Simplify right side
    355,207.80x = 168,635,222,737.02
  5. Step 5: Solve for x
    x = 168,635,222,737.02/355,207.80
  6. Step 6: Final answer
    x = 474,750.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.