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Finding the Fourth Proportional to 199,876.20, 299,775.90 and 59,639.40

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Solution

The fourth proportional to 199,876.20, 299,775.90 and 59,639.40 is: 89,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,876.20 : 299,775.90 = 59,639.40 : x
  2. Step 2: Convert to fraction form
    199,876.20/299,775.90 = 59,639.40/x
  3. Step 3: Cross multiply
    199,876.20x = 299,775.90 × 59,639.40
  4. Step 4: Simplify right side
    199,876.20x = 17,878,454,810.46
  5. Step 5: Solve for x
    x = 17,878,454,810.46/199,876.20
  6. Step 6: Final answer
    x = 89,447.64

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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.