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Finding the Fourth Proportional to 402,970.46, 555,572.16 and 292,489.79

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Solution

The fourth proportional to 402,970.46, 555,572.16 and 292,489.79 is: 403,253.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,970.46 : 555,572.16 = 292,489.79 : x
  2. Step 2: Convert to fraction form
    402,970.46/555,572.16 = 292,489.79/x
  3. Step 3: Cross multiply
    402,970.46x = 555,572.16 × 292,489.79
  4. Step 4: Simplify right side
    402,970.46x = 162,499,181,630.39
  5. Step 5: Solve for x
    x = 162,499,181,630.39/402,970.46
  6. Step 6: Final answer
    x = 403,253.34

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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.