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Finding the Fourth Proportional to 535,321.20, 802,301.40 and 219,421.20

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Solution

The fourth proportional to 535,321.20, 802,301.40 and 219,421.20 is: 328,852.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,321.20 : 802,301.40 = 219,421.20 : x
  2. Step 2: Convert to fraction form
    535,321.20/802,301.40 = 219,421.20/x
  3. Step 3: Cross multiply
    535,321.20x = 802,301.40 × 219,421.20
  4. Step 4: Simplify right side
    535,321.20x = 176,041,935,949.68
  5. Step 5: Solve for x
    x = 176,041,935,949.68/535,321.20
  6. Step 6: Final answer
    x = 328,852.91

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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.