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Finding the Fourth Proportional to 312,859.80, 469,248.07 and 88,238.27

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Solution

The fourth proportional to 312,859.80, 469,248.07 and 88,238.27 is: 132,345.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,859.80 : 469,248.07 = 88,238.27 : x
  2. Step 2: Convert to fraction form
    312,859.80/469,248.07 = 88,238.27/x
  3. Step 3: Cross multiply
    312,859.80x = 469,248.07 × 88,238.27
  4. Step 4: Simplify right side
    312,859.80x = 41,405,637,897.64
  5. Step 5: Solve for x
    x = 41,405,637,897.64/312,859.80
  6. Step 6: Final answer
    x = 132,345.66

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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.