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Finding the Fourth Proportional to 343,575.20, 516,745.20 and 307,632.80

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Solution

The fourth proportional to 343,575.20, 516,745.20 and 307,632.80 is: 462,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,575.20 : 516,745.20 = 307,632.80 : x
  2. Step 2: Convert to fraction form
    343,575.20/516,745.20 = 307,632.80/x
  3. Step 3: Cross multiply
    343,575.20x = 516,745.20 × 307,632.80
  4. Step 4: Simplify right side
    343,575.20x = 158,967,772,762.56
  5. Step 5: Solve for x
    x = 158,967,772,762.56/343,575.20
  6. Step 6: Final answer
    x = 462,686.98

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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.