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Finding the Fourth Proportional to 268,565.80, 402,848.78 and 68,886.16

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Solution

The fourth proportional to 268,565.80, 402,848.78 and 68,886.16 is: 103,329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,565.80 : 402,848.78 = 68,886.16 : x
  2. Step 2: Convert to fraction form
    268,565.80/402,848.78 = 68,886.16/x
  3. Step 3: Cross multiply
    268,565.80x = 402,848.78 × 68,886.16
  4. Step 4: Simplify right side
    268,565.80x = 27,750,703,500.64
  5. Step 5: Solve for x
    x = 27,750,703,500.64/268,565.80
  6. Step 6: Final answer
    x = 103,329.25

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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.