Home / 443,721.60-666,019.80-219,335.40

Finding the Fourth Proportional to 443,721.60, 666,019.80 and 219,335.40

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Solution

The fourth proportional to 443,721.60, 666,019.80 and 219,335.40 is: 329,219.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,721.60 : 666,019.80 = 219,335.40 : x
  2. Step 2: Convert to fraction form
    443,721.60/666,019.80 = 219,335.40/x
  3. Step 3: Cross multiply
    443,721.60x = 666,019.80 × 219,335.40
  4. Step 4: Simplify right side
    443,721.60x = 146,081,719,240.92
  5. Step 5: Solve for x
    x = 146,081,719,240.92/443,721.60
  6. Step 6: Final answer
    x = 329,219.31

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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.