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Finding the Fourth Proportional to 463,935.61, 640,275.96 and 260,020.90

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Solution

The fourth proportional to 463,935.61, 640,275.96 and 260,020.90 is: 358,853.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,935.61 : 640,275.96 = 260,020.90 : x
  2. Step 2: Convert to fraction form
    463,935.61/640,275.96 = 260,020.90/x
  3. Step 3: Cross multiply
    463,935.61x = 640,275.96 × 260,020.90
  4. Step 4: Simplify right side
    463,935.61x = 166,485,131,367.56
  5. Step 5: Solve for x
    x = 166,485,131,367.56/463,935.61
  6. Step 6: Final answer
    x = 358,853.96

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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.