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Finding the Fourth Proportional to 280,526.72, 420,793.80 and 93,538.28

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Solution

The fourth proportional to 280,526.72, 420,793.80 and 93,538.28 is: 140,308.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,526.72 : 420,793.80 = 93,538.28 : x
  2. Step 2: Convert to fraction form
    280,526.72/420,793.80 = 93,538.28/x
  3. Step 3: Cross multiply
    280,526.72x = 420,793.80 × 93,538.28
  4. Step 4: Simplify right side
    280,526.72x = 39,360,328,286.66
  5. Step 5: Solve for x
    x = 39,360,328,286.66/280,526.72
  6. Step 6: Final answer
    x = 140,308.66

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1.5x scale

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.