Home / 385,732.23-578,636.40-132,979.47

Finding the Fourth Proportional to 385,732.23, 578,636.40 and 132,979.47

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Solution

The fourth proportional to 385,732.23, 578,636.40 and 132,979.47 is: 199,482.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,732.23 : 578,636.40 = 132,979.47 : x
  2. Step 2: Convert to fraction form
    385,732.23/578,636.40 = 132,979.47/x
  3. Step 3: Cross multiply
    385,732.23x = 578,636.40 × 132,979.47
  4. Step 4: Simplify right side
    385,732.23x = 76,946,761,794.71
  5. Step 5: Solve for x
    x = 76,946,761,794.71/385,732.23
  6. Step 6: Final answer
    x = 199,482.32

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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.