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Finding the Fourth Proportional to 272,157.60, 408,139.20 and 94,670.40

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Solution

The fourth proportional to 272,157.60, 408,139.20 and 94,670.40 is: 141,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,157.60 : 408,139.20 = 94,670.40 : x
  2. Step 2: Convert to fraction form
    272,157.60/408,139.20 = 94,670.40/x
  3. Step 3: Cross multiply
    272,157.60x = 408,139.20 × 94,670.40
  4. Step 4: Simplify right side
    272,157.60x = 38,638,701,319.68
  5. Step 5: Solve for x
    x = 38,638,701,319.68/272,157.60
  6. Step 6: Final answer
    x = 141,971.79

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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.