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Finding the Fourth Proportional to 311,437.78, 429,768.24 and 175,479.76

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Solution

The fourth proportional to 311,437.78, 429,768.24 and 175,479.76 is: 242,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,437.78 : 429,768.24 = 175,479.76 : x
  2. Step 2: Convert to fraction form
    311,437.78/429,768.24 = 175,479.76/x
  3. Step 3: Cross multiply
    311,437.78x = 429,768.24 × 175,479.76
  4. Step 4: Simplify right side
    311,437.78x = 75,415,627,610.82
  5. Step 5: Solve for x
    x = 75,415,627,610.82/311,437.78
  6. Step 6: Final answer
    x = 242,153.11

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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.