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Finding the Fourth Proportional to 497,237.70, 745,856.55 and 308,280.90

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Solution

The fourth proportional to 497,237.70, 745,856.55 and 308,280.90 is: 462,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,237.70 : 745,856.55 = 308,280.90 : x
  2. Step 2: Convert to fraction form
    497,237.70/745,856.55 = 308,280.90/x
  3. Step 3: Cross multiply
    497,237.70x = 745,856.55 × 308,280.90
  4. Step 4: Simplify right side
    497,237.70x = 229,933,328,504.90
  5. Step 5: Solve for x
    x = 229,933,328,504.90/497,237.70
  6. Step 6: Final answer
    x = 462,421.35

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Similar ratio
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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.