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Finding the Fourth Proportional to 288,545.59, 398,304.03 and 258,277.51

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Solution

The fourth proportional to 288,545.59, 398,304.03 and 258,277.51 is: 356,522.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,545.59 : 398,304.03 = 258,277.51 : x
  2. Step 2: Convert to fraction form
    288,545.59/398,304.03 = 258,277.51/x
  3. Step 3: Cross multiply
    288,545.59x = 398,304.03 × 258,277.51
  4. Step 4: Simplify right side
    288,545.59x = 102,872,974,557.79
  5. Step 5: Solve for x
    x = 102,872,974,557.79/288,545.59
  6. Step 6: Final answer
    x = 356,522.43

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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.