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Finding the Fourth Proportional to 218,627.60, 301,727.55 and 127,978.10

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Solution

The fourth proportional to 218,627.60, 301,727.55 and 127,978.10 is: 176,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,627.60 : 301,727.55 = 127,978.10 : x
  2. Step 2: Convert to fraction form
    218,627.60/301,727.55 = 127,978.10/x
  3. Step 3: Cross multiply
    218,627.60x = 301,727.55 × 127,978.10
  4. Step 4: Simplify right side
    218,627.60x = 38,614,518,566.66
  5. Step 5: Solve for x
    x = 38,614,518,566.66/218,627.60
  6. Step 6: Final answer
    x = 176,622.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.