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Finding the Fourth Proportional to 398,977.80, 597,980.70 and 173,862.60

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Solution

The fourth proportional to 398,977.80, 597,980.70 and 173,862.60 is: 260,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,977.80 : 597,980.70 = 173,862.60 : x
  2. Step 2: Convert to fraction form
    398,977.80/597,980.70 = 173,862.60/x
  3. Step 3: Cross multiply
    398,977.80x = 597,980.70 × 173,862.60
  4. Step 4: Simplify right side
    398,977.80x = 103,966,479,251.82
  5. Step 5: Solve for x
    x = 103,966,479,251.82/398,977.80
  6. Step 6: Final answer
    x = 260,582.12

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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.