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Finding the Fourth Proportional to 249,656.94, 344,526.75 and 136,479.78

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Solution

The fourth proportional to 249,656.94, 344,526.75 and 136,479.78 is: 188,342.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,656.94 : 344,526.75 = 136,479.78 : x
  2. Step 2: Convert to fraction form
    249,656.94/344,526.75 = 136,479.78/x
  3. Step 3: Cross multiply
    249,656.94x = 344,526.75 × 136,479.78
  4. Step 4: Simplify right side
    249,656.94x = 47,020,935,044.12
  5. Step 5: Solve for x
    x = 47,020,935,044.12/249,656.94
  6. Step 6: Final answer
    x = 188,342.19

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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.