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Finding the Fourth Proportional to 442,686.28, 663,955.13 and 122,870.63

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Solution

The fourth proportional to 442,686.28, 663,955.13 and 122,870.63 is: 184,285.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,686.28 : 663,955.13 = 122,870.63 : x
  2. Step 2: Convert to fraction form
    442,686.28/663,955.13 = 122,870.63/x
  3. Step 3: Cross multiply
    442,686.28x = 663,955.13 × 122,870.63
  4. Step 4: Simplify right side
    442,686.28x = 81,580,587,324.44
  5. Step 5: Solve for x
    x = 81,580,587,324.44/442,686.28
  6. Step 6: Final answer
    x = 184,285.33

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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.