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Finding the Fourth Proportional to 310,838.68, 428,956.68 and 174,872.68

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Solution

The fourth proportional to 310,838.68, 428,956.68 and 174,872.68 is: 241,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,838.68 : 428,956.68 = 174,872.68 : x
  2. Step 2: Convert to fraction form
    310,838.68/428,956.68 = 174,872.68/x
  3. Step 3: Cross multiply
    310,838.68x = 428,956.68 × 174,872.68
  4. Step 4: Simplify right side
    310,838.68x = 75,012,804,235.50
  5. Step 5: Solve for x
    x = 75,012,804,235.50/310,838.68
  6. Step 6: Final answer
    x = 241,323.91

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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.