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Finding the Fourth Proportional to 639,195.62, 959,159.76 and 260,046.37

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Solution

The fourth proportional to 639,195.62, 959,159.76 and 260,046.37 is: 390,218.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,195.62 : 959,159.76 = 260,046.37 : x
  2. Step 2: Convert to fraction form
    639,195.62/959,159.76 = 260,046.37/x
  3. Step 3: Cross multiply
    639,195.62x = 959,159.76 × 260,046.37
  4. Step 4: Simplify right side
    639,195.62x = 249,426,013,838.07
  5. Step 5: Solve for x
    x = 249,426,013,838.07/639,195.62
  6. Step 6: Final answer
    x = 390,218.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.