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Finding the Fourth Proportional to 430,775.02, 646,294.29 and 220,561.66

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Solution

The fourth proportional to 430,775.02, 646,294.29 and 220,561.66 is: 330,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,775.02 : 646,294.29 = 220,561.66 : x
  2. Step 2: Convert to fraction form
    430,775.02/646,294.29 = 220,561.66/x
  3. Step 3: Cross multiply
    430,775.02x = 646,294.29 × 220,561.66
  4. Step 4: Simplify right side
    430,775.02x = 142,547,741,450.92
  5. Step 5: Solve for x
    x = 142,547,741,450.92/430,775.02
  6. Step 6: Final answer
    x = 330,909.95

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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.