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Finding the Fourth Proportional to 491,555.84, 736,152.60 and 280,554.08

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Solution

The fourth proportional to 491,555.84, 736,152.60 and 280,554.08 is: 420,156.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,555.84 : 736,152.60 = 280,554.08 : x
  2. Step 2: Convert to fraction form
    491,555.84/736,152.60 = 280,554.08/x
  3. Step 3: Cross multiply
    491,555.84x = 736,152.60 × 280,554.08
  4. Step 4: Simplify right side
    491,555.84x = 206,530,615,432.61
  5. Step 5: Solve for x
    x = 206,530,615,432.61/491,555.84
  6. Step 6: Final answer
    x = 420,156.98

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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.