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Finding the Fourth Proportional to 282,571.40, 423,857.10 and 72,225.80

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Solution

The fourth proportional to 282,571.40, 423,857.10 and 72,225.80 is: 108,338.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,571.40 : 423,857.10 = 72,225.80 : x
  2. Step 2: Convert to fraction form
    282,571.40/423,857.10 = 72,225.80/x
  3. Step 3: Cross multiply
    282,571.40x = 423,857.10 × 72,225.80
  4. Step 4: Simplify right side
    282,571.40x = 30,613,418,133.18
  5. Step 5: Solve for x
    x = 30,613,418,133.18/282,571.40
  6. Step 6: Final answer
    x = 108,338.70

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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.