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Finding the Fourth Proportional to 282,616.80, 423,925.20 and 72,243.60

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Solution

The fourth proportional to 282,616.80, 423,925.20 and 72,243.60 is: 108,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,616.80 : 423,925.20 = 72,243.60 : x
  2. Step 2: Convert to fraction form
    282,616.80/423,925.20 = 72,243.60/x
  3. Step 3: Cross multiply
    282,616.80x = 423,925.20 × 72,243.60
  4. Step 4: Simplify right side
    282,616.80x = 30,625,882,578.72
  5. Step 5: Solve for x
    x = 30,625,882,578.72/282,616.80
  6. Step 6: Final answer
    x = 108,365.40

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1.5x scale

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.