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Finding the Fourth Proportional to 458,312.87, 632,478.56 and 254,376.92

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Solution

The fourth proportional to 458,312.87, 632,478.56 and 254,376.92 is: 351,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,312.87 : 632,478.56 = 254,376.92 : x
  2. Step 2: Convert to fraction form
    458,312.87/632,478.56 = 254,376.92/x
  3. Step 3: Cross multiply
    458,312.87x = 632,478.56 × 254,376.92
  4. Step 4: Simplify right side
    458,312.87x = 160,887,943,624.56
  5. Step 5: Solve for x
    x = 160,887,943,624.56/458,312.87
  6. Step 6: Final answer
    x = 351,043.92

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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.