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Finding the Fourth Proportional to 155,427.20, 233,140.80 and 151,971.20

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Solution

The fourth proportional to 155,427.20, 233,140.80 and 151,971.20 is: 227,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,427.20 : 233,140.80 = 151,971.20 : x
  2. Step 2: Convert to fraction form
    155,427.20/233,140.80 = 151,971.20/x
  3. Step 3: Cross multiply
    155,427.20x = 233,140.80 × 151,971.20
  4. Step 4: Simplify right side
    155,427.20x = 35,430,687,144.96
  5. Step 5: Solve for x
    x = 35,430,687,144.96/155,427.20
  6. Step 6: Final answer
    x = 227,956.80

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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.