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Finding the Fourth Proportional to 218,575.60, 301,641.87 and 127,940.02

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Solution

The fourth proportional to 218,575.60, 301,641.87 and 127,940.02 is: 176,561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,575.60 : 301,641.87 = 127,940.02 : x
  2. Step 2: Convert to fraction form
    218,575.60/301,641.87 = 127,940.02/x
  3. Step 3: Cross multiply
    218,575.60x = 301,641.87 × 127,940.02
  4. Step 4: Simplify right side
    218,575.60x = 38,592,066,880.64
  5. Step 5: Solve for x
    x = 38,592,066,880.64/218,575.60
  6. Step 6: Final answer
    x = 176,561.64

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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.