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Finding the Fourth Proportional to 430,070.40, 644,580.72 and 242,694.72

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Solution

The fourth proportional to 430,070.40, 644,580.72 and 242,694.72 is: 363,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,070.40 : 644,580.72 = 242,694.72 : x
  2. Step 2: Convert to fraction form
    430,070.40/644,580.72 = 242,694.72/x
  3. Step 3: Cross multiply
    430,070.40x = 644,580.72 × 242,694.72
  4. Step 4: Simplify right side
    430,070.40x = 156,436,337,357.80
  5. Step 5: Solve for x
    x = 156,436,337,357.80/430,070.40
  6. Step 6: Final answer
    x = 363,745.88

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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.