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Finding the Fourth Proportional to 399,640.80, 599,374.80 and 175,000.80

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Solution

The fourth proportional to 399,640.80, 599,374.80 and 175,000.80 is: 262,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,640.80 : 599,374.80 = 175,000.80 : x
  2. Step 2: Convert to fraction form
    399,640.80/599,374.80 = 175,000.80/x
  3. Step 3: Cross multiply
    399,640.80x = 599,374.80 × 175,000.80
  4. Step 4: Simplify right side
    399,640.80x = 104,891,069,499.84
  5. Step 5: Solve for x
    x = 104,891,069,499.84/399,640.80
  6. Step 6: Final answer
    x = 262,463.37

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1.5x scale

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.