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Finding the Fourth Proportional to 151,978.40, 228,356.40 and 134,871.20

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Solution

The fourth proportional to 151,978.40, 228,356.40 and 134,871.20 is: 202,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,978.40 : 228,356.40 = 134,871.20 : x
  2. Step 2: Convert to fraction form
    151,978.40/228,356.40 = 134,871.20/x
  3. Step 3: Cross multiply
    151,978.40x = 228,356.40 × 134,871.20
  4. Step 4: Simplify right side
    151,978.40x = 30,798,701,695.68
  5. Step 5: Solve for x
    x = 30,798,701,695.68/151,978.40
  6. Step 6: Final answer
    x = 202,651.84

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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.