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Finding the Fourth Proportional to 253,387.80, 380,081.70 and 249,451.20

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Solution

The fourth proportional to 253,387.80, 380,081.70 and 249,451.20 is: 374,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,387.80 : 380,081.70 = 249,451.20 : x
  2. Step 2: Convert to fraction form
    253,387.80/380,081.70 = 249,451.20/x
  3. Step 3: Cross multiply
    253,387.80x = 380,081.70 × 249,451.20
  4. Step 4: Simplify right side
    253,387.80x = 94,811,836,163.04
  5. Step 5: Solve for x
    x = 94,811,836,163.04/253,387.80
  6. Step 6: Final answer
    x = 374,176.80

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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.