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Finding the Fourth Proportional to 402,170.66, 555,001.76 and 220,889.96

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Solution

The fourth proportional to 402,170.66, 555,001.76 and 220,889.96 is: 304,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,170.66 : 555,001.76 = 220,889.96 : x
  2. Step 2: Convert to fraction form
    402,170.66/555,001.76 = 220,889.96/x
  3. Step 3: Cross multiply
    402,170.66x = 555,001.76 × 220,889.96
  4. Step 4: Simplify right side
    402,170.66x = 122,594,316,566.33
  5. Step 5: Solve for x
    x = 122,594,316,566.33/402,170.66
  6. Step 6: Final answer
    x = 304,831.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.