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Finding the Fourth Proportional to 155,428.40, 233,488.20 and 151,281.20

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Solution

The fourth proportional to 155,428.40, 233,488.20 and 151,281.20 is: 227,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,428.40 : 233,488.20 = 151,281.20 : x
  2. Step 2: Convert to fraction form
    155,428.40/233,488.20 = 151,281.20/x
  3. Step 3: Cross multiply
    155,428.40x = 233,488.20 × 151,281.20
  4. Step 4: Simplify right side
    155,428.40x = 35,322,375,081.84
  5. Step 5: Solve for x
    x = 35,322,375,081.84/155,428.40
  6. Step 6: Final answer
    x = 227,258.18

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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.