Home / 385,716.17-578,612.30-132,963.36

Finding the Fourth Proportional to 385,716.17, 578,612.30 and 132,963.36

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Solution

The fourth proportional to 385,716.17, 578,612.30 and 132,963.36 is: 199,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,716.17 : 578,612.30 = 132,963.36 : x
  2. Step 2: Convert to fraction form
    385,716.17/578,612.30 = 132,963.36/x
  3. Step 3: Cross multiply
    385,716.17x = 578,612.30 × 132,963.36
  4. Step 4: Simplify right side
    385,716.17x = 76,934,234,880.51
  5. Step 5: Solve for x
    x = 76,934,234,880.51/385,716.17
  6. Step 6: Final answer
    x = 199,458.16

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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.