Home / 426,721.52-640,397.24-202,081.52

Finding the Fourth Proportional to 426,721.52, 640,397.24 and 202,081.52

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Solution

The fourth proportional to 426,721.52, 640,397.24 and 202,081.52 is: 303,271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,721.52 : 640,397.24 = 202,081.52 : x
  2. Step 2: Convert to fraction form
    426,721.52/640,397.24 = 202,081.52/x
  3. Step 3: Cross multiply
    426,721.52x = 640,397.24 × 202,081.52
  4. Step 4: Simplify right side
    426,721.52x = 129,412,447,663.01
  5. Step 5: Solve for x
    x = 129,412,447,663.01/426,721.52
  6. Step 6: Final answer
    x = 303,271.43

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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.