Home / 385,414.53-578,137.59-104,931.78

Finding the Fourth Proportional to 385,414.53, 578,137.59 and 104,931.78

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Solution

The fourth proportional to 385,414.53, 578,137.59 and 104,931.78 is: 157,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,414.53 : 578,137.59 = 104,931.78 : x
  2. Step 2: Convert to fraction form
    385,414.53/578,137.59 = 104,931.78/x
  3. Step 3: Cross multiply
    385,414.53x = 578,137.59 × 104,931.78
  4. Step 4: Simplify right side
    385,414.53x = 60,665,006,403.61
  5. Step 5: Solve for x
    x = 60,665,006,403.61/385,414.53
  6. Step 6: Final answer
    x = 157,401.97

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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.