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Finding the Fourth Proportional to 265,931.80, 398,897.70 and 166,204.60

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Solution

The fourth proportional to 265,931.80, 398,897.70 and 166,204.60 is: 249,306.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,931.80 : 398,897.70 = 166,204.60 : x
  2. Step 2: Convert to fraction form
    265,931.80/398,897.70 = 166,204.60/x
  3. Step 3: Cross multiply
    265,931.80x = 398,897.70 × 166,204.60
  4. Step 4: Simplify right side
    265,931.80x = 66,298,632,669.42
  5. Step 5: Solve for x
    x = 66,298,632,669.42/265,931.80
  6. Step 6: Final answer
    x = 249,306.90

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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.