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Finding the Fourth Proportional to 283,362.75, 391,040.64 and 156,038.04

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Solution

The fourth proportional to 283,362.75, 391,040.64 and 156,038.04 is: 215,332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,362.75 : 391,040.64 = 156,038.04 : x
  2. Step 2: Convert to fraction form
    283,362.75/391,040.64 = 156,038.04/x
  3. Step 3: Cross multiply
    283,362.75x = 391,040.64 × 156,038.04
  4. Step 4: Simplify right side
    283,362.75x = 61,017,215,025.95
  5. Step 5: Solve for x
    x = 61,017,215,025.95/283,362.75
  6. Step 6: Final answer
    x = 215,332.52

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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.