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Finding the Fourth Proportional to 392,870.04, 542,146.32 and 240,163.98

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Solution

The fourth proportional to 392,870.04, 542,146.32 and 240,163.98 is: 331,417.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,870.04 : 542,146.32 = 240,163.98 : x
  2. Step 2: Convert to fraction form
    392,870.04/542,146.32 = 240,163.98/x
  3. Step 3: Cross multiply
    392,870.04x = 542,146.32 × 240,163.98
  4. Step 4: Simplify right side
    392,870.04x = 130,204,017,953.55
  5. Step 5: Solve for x
    x = 130,204,017,953.55/392,870.04
  6. Step 6: Final answer
    x = 331,417.53

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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.