Home / 425,935.84-638,961.36-145,377.76

Finding the Fourth Proportional to 425,935.84, 638,961.36 and 145,377.76

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Solution

The fourth proportional to 425,935.84, 638,961.36 and 145,377.76 is: 218,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,935.84 : 638,961.36 = 145,377.76 : x
  2. Step 2: Convert to fraction form
    425,935.84/638,961.36 = 145,377.76/x
  3. Step 3: Cross multiply
    425,935.84x = 638,961.36 × 145,377.76
  4. Step 4: Simplify right side
    425,935.84x = 92,890,771,243.35
  5. Step 5: Solve for x
    x = 92,890,771,243.35/425,935.84
  6. Step 6: Final answer
    x = 218,086.30

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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.