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Finding the Fourth Proportional to 258,252.57, 387,401.13 and 71,264.07

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Solution

The fourth proportional to 258,252.57, 387,401.13 and 71,264.07 is: 106,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,252.57 : 387,401.13 = 71,264.07 : x
  2. Step 2: Convert to fraction form
    258,252.57/387,401.13 = 71,264.07/x
  3. Step 3: Cross multiply
    258,252.57x = 387,401.13 × 71,264.07
  4. Step 4: Simplify right side
    258,252.57x = 27,607,781,246.40
  5. Step 5: Solve for x
    x = 27,607,781,246.40/258,252.57
  6. Step 6: Final answer
    x = 106,902.25

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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.