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Finding the Fourth Proportional to 657,490.50, 986,263.97 and 258,217.61

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Solution

The fourth proportional to 657,490.50, 986,263.97 and 258,217.61 is: 387,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,490.50 : 986,263.97 = 258,217.61 : x
  2. Step 2: Convert to fraction form
    657,490.50/986,263.97 = 258,217.61/x
  3. Step 3: Cross multiply
    657,490.50x = 986,263.97 × 258,217.61
  4. Step 4: Simplify right side
    657,490.50x = 254,670,718,940.10
  5. Step 5: Solve for x
    x = 254,670,718,940.10/657,490.50
  6. Step 6: Final answer
    x = 387,337.49

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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.