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Finding the Fourth Proportional to 240,866, 361,385.88 and 128,427.92

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Solution

The fourth proportional to 240,866, 361,385.88 and 128,427.92 is: 192,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,866 : 361,385.88 = 128,427.92 : x
  2. Step 2: Convert to fraction form
    240,866/361,385.88 = 128,427.92/x
  3. Step 3: Cross multiply
    240,866x = 361,385.88 × 128,427.92
  4. Step 4: Simplify right side
    240,866x = 46,412,036,885.77
  5. Step 5: Solve for x
    x = 46,412,036,885.77/240,866
  6. Step 6: Final answer
    x = 192,688.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.