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Finding the Fourth Proportional to 657,999.50, 987,004.20 and 159,363.50

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Solution

The fourth proportional to 657,999.50, 987,004.20 and 159,363.50 is: 239,046.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,999.50 : 987,004.20 = 159,363.50 : x
  2. Step 2: Convert to fraction form
    657,999.50/987,004.20 = 159,363.50/x
  3. Step 3: Cross multiply
    657,999.50x = 987,004.20 × 159,363.50
  4. Step 4: Simplify right side
    657,999.50x = 157,292,443,826.70
  5. Step 5: Solve for x
    x = 157,292,443,826.70/657,999.50
  6. Step 6: Final answer
    x = 239,046.45

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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.