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Finding the Fourth Proportional to 633,139.32, 873,726.30 and 342,743.46

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Solution

The fourth proportional to 633,139.32, 873,726.30 and 342,743.46 is: 472,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,139.32 : 873,726.30 = 342,743.46 : x
  2. Step 2: Convert to fraction form
    633,139.32/873,726.30 = 342,743.46/x
  3. Step 3: Cross multiply
    633,139.32x = 873,726.30 × 342,743.46
  4. Step 4: Simplify right side
    633,139.32x = 299,463,975,155.00
  5. Step 5: Solve for x
    x = 299,463,975,155.00/633,139.32
  6. Step 6: Final answer
    x = 472,982.75

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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.