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Finding the Fourth Proportional to 430,175.20, 644,571.60 and 359,672.80

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Solution

The fourth proportional to 430,175.20, 644,571.60 and 359,672.80 is: 538,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,175.20 : 644,571.60 = 359,672.80 : x
  2. Step 2: Convert to fraction form
    430,175.20/644,571.60 = 359,672.80/x
  3. Step 3: Cross multiply
    430,175.20x = 644,571.60 × 359,672.80
  4. Step 4: Simplify right side
    430,175.20x = 231,834,872,172.48
  5. Step 5: Solve for x
    x = 231,834,872,172.48/430,175.20
  6. Step 6: Final answer
    x = 538,931.28

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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.