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Finding the Fourth Proportional to 249,185.52, 343,920.60 and 148,590

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Solution

The fourth proportional to 249,185.52, 343,920.60 and 148,590 is: 205,080.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,185.52 : 343,920.60 = 148,590 : x
  2. Step 2: Convert to fraction form
    249,185.52/343,920.60 = 148,590/x
  3. Step 3: Cross multiply
    249,185.52x = 343,920.60 × 148,590
  4. Step 4: Simplify right side
    249,185.52x = 51,103,161,954
  5. Step 5: Solve for x
    x = 51,103,161,954/249,185.52
  6. Step 6: Final answer
    x = 205,080.78

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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.