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Finding the Fourth Proportional to 523,924.80, 785,887.20 and 129,940.80

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Solution

The fourth proportional to 523,924.80, 785,887.20 and 129,940.80 is: 194,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,924.80 : 785,887.20 = 129,940.80 : x
  2. Step 2: Convert to fraction form
    523,924.80/785,887.20 = 129,940.80/x
  3. Step 3: Cross multiply
    523,924.80x = 785,887.20 × 129,940.80
  4. Step 4: Simplify right side
    523,924.80x = 102,118,811,477.76
  5. Step 5: Solve for x
    x = 102,118,811,477.76/523,924.80
  6. Step 6: Final answer
    x = 194,911.20

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Similar ratio
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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.