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Finding the Fourth Proportional to 249,611.40, 344,463.12 and 136,434.96

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Solution

The fourth proportional to 249,611.40, 344,463.12 and 136,434.96 is: 188,279.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,611.40 : 344,463.12 = 136,434.96 : x
  2. Step 2: Convert to fraction form
    249,611.40/344,463.12 = 136,434.96/x
  3. Step 3: Cross multiply
    249,611.40x = 344,463.12 × 136,434.96
  4. Step 4: Simplify right side
    249,611.40x = 46,996,811,998.68
  5. Step 5: Solve for x
    x = 46,996,811,998.68/249,611.40
  6. Step 6: Final answer
    x = 188,279.91

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1.5x scale

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.