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Finding the Fourth Proportional to 578,689.98, 868,026.06 and 157,964.64

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Solution

The fourth proportional to 578,689.98, 868,026.06 and 157,964.64 is: 236,944.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,689.98 : 868,026.06 = 157,964.64 : x
  2. Step 2: Convert to fraction form
    578,689.98/868,026.06 = 157,964.64/x
  3. Step 3: Cross multiply
    578,689.98x = 868,026.06 × 157,964.64
  4. Step 4: Simplify right side
    578,689.98x = 137,117,424,078.52
  5. Step 5: Solve for x
    x = 137,117,424,078.52/578,689.98
  6. Step 6: Final answer
    x = 236,944.53

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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.