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Finding the Fourth Proportional to 248,894.40, 372,931.20 and 143,529.60

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Solution

The fourth proportional to 248,894.40, 372,931.20 and 143,529.60 is: 215,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,894.40 : 372,931.20 = 143,529.60 : x
  2. Step 2: Convert to fraction form
    248,894.40/372,931.20 = 143,529.60/x
  3. Step 3: Cross multiply
    248,894.40x = 372,931.20 × 143,529.60
  4. Step 4: Simplify right side
    248,894.40x = 53,526,665,963.52
  5. Step 5: Solve for x
    x = 53,526,665,963.52/248,894.40
  6. Step 6: Final answer
    x = 215,057.74

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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.