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Finding the Fourth Proportional to 265,897.60, 398,308.80 and 165,750.40

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Solution

The fourth proportional to 265,897.60, 398,308.80 and 165,750.40 is: 248,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,897.60 : 398,308.80 = 165,750.40 : x
  2. Step 2: Convert to fraction form
    265,897.60/398,308.80 = 165,750.40/x
  3. Step 3: Cross multiply
    265,897.60x = 398,308.80 × 165,750.40
  4. Step 4: Simplify right side
    265,897.60x = 66,019,842,923.52
  5. Step 5: Solve for x
    x = 66,019,842,923.52/265,897.60
  6. Step 6: Final answer
    x = 248,290.48

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1.5x scale

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.