Home / 386,386.43-579,632.40-133,599.04

Finding the Fourth Proportional to 386,386.43, 579,632.40 and 133,599.04

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Solution

The fourth proportional to 386,386.43, 579,632.40 and 133,599.04 is: 200,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,386.43 : 579,632.40 = 133,599.04 : x
  2. Step 2: Convert to fraction form
    386,386.43/579,632.40 = 133,599.04/x
  3. Step 3: Cross multiply
    386,386.43x = 579,632.40 × 133,599.04
  4. Step 4: Simplify right side
    386,386.43x = 77,438,330,743.82
  5. Step 5: Solve for x
    x = 77,438,330,743.82/386,386.43
  6. Step 6: Final answer
    x = 200,416.80

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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.