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Finding the Fourth Proportional to 657,978.48, 986,973.48 and 159,342.96

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Solution

The fourth proportional to 657,978.48, 986,973.48 and 159,342.96 is: 239,015.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,978.48 : 986,973.48 = 159,342.96 : x
  2. Step 2: Convert to fraction form
    657,978.48/986,973.48 = 159,342.96/x
  3. Step 3: Cross multiply
    657,978.48x = 986,973.48 × 159,342.96
  4. Step 4: Simplify right side
    657,978.48x = 157,267,275,744.70
  5. Step 5: Solve for x
    x = 157,267,275,744.70/657,978.48
  6. Step 6: Final answer
    x = 239,015.83

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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.