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Finding the Fourth Proportional to 258,659.48, 356,981.15 and 156,681.95

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Solution

The fourth proportional to 258,659.48, 356,981.15 and 156,681.95 is: 216,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,659.48 : 356,981.15 = 156,681.95 : x
  2. Step 2: Convert to fraction form
    258,659.48/356,981.15 = 156,681.95/x
  3. Step 3: Cross multiply
    258,659.48x = 356,981.15 × 156,681.95
  4. Step 4: Simplify right side
    258,659.48x = 55,932,501,944.12
  5. Step 5: Solve for x
    x = 55,932,501,944.12/258,659.48
  6. Step 6: Final answer
    x = 216,239.91

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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.