Home / 251,909.40-377,864.10-145,621.20

Finding the Fourth Proportional to 251,909.40, 377,864.10 and 145,621.20

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Solution

The fourth proportional to 251,909.40, 377,864.10 and 145,621.20 is: 218,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,909.40 : 377,864.10 = 145,621.20 : x
  2. Step 2: Convert to fraction form
    251,909.40/377,864.10 = 145,621.20/x
  3. Step 3: Cross multiply
    251,909.40x = 377,864.10 × 145,621.20
  4. Step 4: Simplify right side
    251,909.40x = 55,025,023,678.92
  5. Step 5: Solve for x
    x = 55,025,023,678.92/251,909.40
  6. Step 6: Final answer
    x = 218,431.80

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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.