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Finding the Fourth Proportional to 449,071.80, 619,718.70 and 247,867.32

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Solution

The fourth proportional to 449,071.80, 619,718.70 and 247,867.32 is: 342,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,071.80 : 619,718.70 = 247,867.32 : x
  2. Step 2: Convert to fraction form
    449,071.80/619,718.70 = 247,867.32/x
  3. Step 3: Cross multiply
    449,071.80x = 619,718.70 × 247,867.32
  4. Step 4: Simplify right side
    449,071.80x = 153,608,013,322.88
  5. Step 5: Solve for x
    x = 153,608,013,322.88/449,071.80
  6. Step 6: Final answer
    x = 342,056.69

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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.