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Finding the Fourth Proportional to 276,005.20, 414,007.80 and 157,907.20

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Solution

The fourth proportional to 276,005.20, 414,007.80 and 157,907.20 is: 236,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,005.20 : 414,007.80 = 157,907.20 : x
  2. Step 2: Convert to fraction form
    276,005.20/414,007.80 = 157,907.20/x
  3. Step 3: Cross multiply
    276,005.20x = 414,007.80 × 157,907.20
  4. Step 4: Simplify right side
    276,005.20x = 65,374,812,476.16
  5. Step 5: Solve for x
    x = 65,374,812,476.16/276,005.20
  6. Step 6: Final answer
    x = 236,860.80

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1.5x scale

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.