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Finding the Fourth Proportional to 249,165.69, 343,729.08 and 163,086.78

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Solution

The fourth proportional to 249,165.69, 343,729.08 and 163,086.78 is: 224,981.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,165.69 : 343,729.08 = 163,086.78 : x
  2. Step 2: Convert to fraction form
    249,165.69/343,729.08 = 163,086.78/x
  3. Step 3: Cross multiply
    249,165.69x = 343,729.08 × 163,086.78
  4. Step 4: Simplify right side
    249,165.69x = 56,057,668,849.56
  5. Step 5: Solve for x
    x = 56,057,668,849.56/249,165.69
  6. Step 6: Final answer
    x = 224,981.49

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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.