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Finding the Fourth Proportional to 398,139.60, 597,209.40 and 248,840.40

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Solution

The fourth proportional to 398,139.60, 597,209.40 and 248,840.40 is: 373,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,139.60 : 597,209.40 = 248,840.40 : x
  2. Step 2: Convert to fraction form
    398,139.60/597,209.40 = 248,840.40/x
  3. Step 3: Cross multiply
    398,139.60x = 597,209.40 × 248,840.40
  4. Step 4: Simplify right side
    398,139.60x = 148,609,825,979.76
  5. Step 5: Solve for x
    x = 148,609,825,979.76/398,139.60
  6. Step 6: Final answer
    x = 373,260.60

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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.