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Finding the Fourth Proportional to 458,281.50, 632,432.79 and 257,081.82

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Solution

The fourth proportional to 458,281.50, 632,432.79 and 257,081.82 is: 354,775.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,281.50 : 632,432.79 = 257,081.82 : x
  2. Step 2: Convert to fraction form
    458,281.50/632,432.79 = 257,081.82/x
  3. Step 3: Cross multiply
    458,281.50x = 632,432.79 × 257,081.82
  4. Step 4: Simplify right side
    458,281.50x = 162,586,972,680.88
  5. Step 5: Solve for x
    x = 162,586,972,680.88/458,281.50
  6. Step 6: Final answer
    x = 354,775.33

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1.5x scale

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.