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Finding the Fourth Proportional to 249,254.80, 343,969.20 and 153,723.28

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Solution

The fourth proportional to 249,254.80, 343,969.20 and 153,723.28 is: 212,136.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,254.80 : 343,969.20 = 153,723.28 : x
  2. Step 2: Convert to fraction form
    249,254.80/343,969.20 = 153,723.28/x
  3. Step 3: Cross multiply
    249,254.80x = 343,969.20 × 153,723.28
  4. Step 4: Simplify right side
    249,254.80x = 52,876,073,642.98
  5. Step 5: Solve for x
    x = 52,876,073,642.98/249,254.80
  6. Step 6: Final answer
    x = 212,136.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.