Home / 385,642.17-578,837.31-186,103.02

Finding the Fourth Proportional to 385,642.17, 578,837.31 and 186,103.02

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Solution

The fourth proportional to 385,642.17, 578,837.31 and 186,103.02 is: 279,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,642.17 : 578,837.31 = 186,103.02 : x
  2. Step 2: Convert to fraction form
    385,642.17/578,837.31 = 186,103.02/x
  3. Step 3: Cross multiply
    385,642.17x = 578,837.31 × 186,103.02
  4. Step 4: Simplify right side
    385,642.17x = 107,723,371,479.68
  5. Step 5: Solve for x
    x = 107,723,371,479.68/385,642.17
  6. Step 6: Final answer
    x = 279,335.04

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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.