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Finding the Fourth Proportional to 553,325.20, 829,987.80 and 343,373.20

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Solution

The fourth proportional to 553,325.20, 829,987.80 and 343,373.20 is: 515,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,325.20 : 829,987.80 = 343,373.20 : x
  2. Step 2: Convert to fraction form
    553,325.20/829,987.80 = 343,373.20/x
  3. Step 3: Cross multiply
    553,325.20x = 829,987.80 × 343,373.20
  4. Step 4: Simplify right side
    553,325.20x = 284,995,566,846.96
  5. Step 5: Solve for x
    x = 284,995,566,846.96/553,325.20
  6. Step 6: Final answer
    x = 515,059.80

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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.