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Finding the Fourth Proportional to 486,401.61, 671,240.86 and 268,624.97

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Solution

The fourth proportional to 486,401.61, 671,240.86 and 268,624.97 is: 370,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,401.61 : 671,240.86 = 268,624.97 : x
  2. Step 2: Convert to fraction form
    486,401.61/671,240.86 = 268,624.97/x
  3. Step 3: Cross multiply
    486,401.61x = 671,240.86 × 268,624.97
  4. Step 4: Simplify right side
    486,401.61x = 180,312,056,446.86
  5. Step 5: Solve for x
    x = 180,312,056,446.86/486,401.61
  6. Step 6: Final answer
    x = 370,706.13

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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.