Home / 398,415.80-596,943.30-187,621.40

Finding the Fourth Proportional to 398,415.80, 596,943.30 and 187,621.40

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Solution

The fourth proportional to 398,415.80, 596,943.30 and 187,621.40 is: 281,111.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,415.80 : 596,943.30 = 187,621.40 : x
  2. Step 2: Convert to fraction form
    398,415.80/596,943.30 = 187,621.40/x
  3. Step 3: Cross multiply
    398,415.80x = 596,943.30 × 187,621.40
  4. Step 4: Simplify right side
    398,415.80x = 111,999,337,666.62
  5. Step 5: Solve for x
    x = 111,999,337,666.62/398,415.80
  6. Step 6: Final answer
    x = 281,111.69

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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.