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Finding the Fourth Proportional to 282,633.40, 423,950.10 and 72,287.80

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Solution

The fourth proportional to 282,633.40, 423,950.10 and 72,287.80 is: 108,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,633.40 : 423,950.10 = 72,287.80 : x
  2. Step 2: Convert to fraction form
    282,633.40/423,950.10 = 72,287.80/x
  3. Step 3: Cross multiply
    282,633.40x = 423,950.10 × 72,287.80
  4. Step 4: Simplify right side
    282,633.40x = 30,646,420,038.78
  5. Step 5: Solve for x
    x = 30,646,420,038.78/282,633.40
  6. Step 6: Final answer
    x = 108,431.70

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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.