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Finding the Fourth Proportional to 458,490.72, 632,688.78 and 254,529.72

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Solution

The fourth proportional to 458,490.72, 632,688.78 and 254,529.72 is: 351,235.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,490.72 : 632,688.78 = 254,529.72 : x
  2. Step 2: Convert to fraction form
    458,490.72/632,688.78 = 254,529.72/x
  3. Step 3: Cross multiply
    458,490.72x = 632,688.78 × 254,529.72
  4. Step 4: Simplify right side
    458,490.72x = 161,038,098,020.54
  5. Step 5: Solve for x
    x = 161,038,098,020.54/458,490.72
  6. Step 6: Final answer
    x = 351,235.24

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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.