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Finding the Fourth Proportional to 454,430.80, 681,646.20 and 154,811.80

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Solution

The fourth proportional to 454,430.80, 681,646.20 and 154,811.80 is: 232,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,430.80 : 681,646.20 = 154,811.80 : x
  2. Step 2: Convert to fraction form
    454,430.80/681,646.20 = 154,811.80/x
  3. Step 3: Cross multiply
    454,430.80x = 681,646.20 × 154,811.80
  4. Step 4: Simplify right side
    454,430.80x = 105,526,875,185.16
  5. Step 5: Solve for x
    x = 105,526,875,185.16/454,430.80
  6. Step 6: Final answer
    x = 232,217.70

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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.