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Finding the Fourth Proportional to 265,488.80, 398,233.20 and 171,010.40

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Solution

The fourth proportional to 265,488.80, 398,233.20 and 171,010.40 is: 256,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,488.80 : 398,233.20 = 171,010.40 : x
  2. Step 2: Convert to fraction form
    265,488.80/398,233.20 = 171,010.40/x
  3. Step 3: Cross multiply
    265,488.80x = 398,233.20 × 171,010.40
  4. Step 4: Simplify right side
    265,488.80x = 68,102,018,825.28
  5. Step 5: Solve for x
    x = 68,102,018,825.28/265,488.80
  6. Step 6: Final answer
    x = 256,515.60

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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.