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Finding the Fourth Proportional to 253,468.80, 349,785.60 and 140,289.60

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Solution

The fourth proportional to 253,468.80, 349,785.60 and 140,289.60 is: 193,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,468.80 : 349,785.60 = 140,289.60 : x
  2. Step 2: Convert to fraction form
    253,468.80/349,785.60 = 140,289.60/x
  3. Step 3: Cross multiply
    253,468.80x = 349,785.60 × 140,289.60
  4. Step 4: Simplify right side
    253,468.80x = 49,071,281,909.76
  5. Step 5: Solve for x
    x = 49,071,281,909.76/253,468.80
  6. Step 6: Final answer
    x = 193,598.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.