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Finding the Fourth Proportional to 218,656.95, 301,643.48 and 127,957.31

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Solution

The fourth proportional to 218,656.95, 301,643.48 and 127,957.31 is: 176,520.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,656.95 : 301,643.48 = 127,957.31 : x
  2. Step 2: Convert to fraction form
    218,656.95/301,643.48 = 127,957.31/x
  3. Step 3: Cross multiply
    218,656.95x = 301,643.48 × 127,957.31
  4. Step 4: Simplify right side
    218,656.95x = 38,597,486,131.83
  5. Step 5: Solve for x
    x = 38,597,486,131.83/218,656.95
  6. Step 6: Final answer
    x = 176,520.74

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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.