Home / 251,981.40-378,081.45-127,322.40

Finding the Fourth Proportional to 251,981.40, 378,081.45 and 127,322.40

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Solution

The fourth proportional to 251,981.40, 378,081.45 and 127,322.40 is: 191,038.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,981.40 : 378,081.45 = 127,322.40 : x
  2. Step 2: Convert to fraction form
    251,981.40/378,081.45 = 127,322.40/x
  3. Step 3: Cross multiply
    251,981.40x = 378,081.45 × 127,322.40
  4. Step 4: Simplify right side
    251,981.40x = 48,138,237,609.48
  5. Step 5: Solve for x
    x = 48,138,237,609.48/251,981.40
  6. Step 6: Final answer
    x = 191,038.85

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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.