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Finding the Fourth Proportional to 349,728.80, 524,987.40 and 231,630.80

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Solution

The fourth proportional to 349,728.80, 524,987.40 and 231,630.80 is: 347,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,728.80 : 524,987.40 = 231,630.80 : x
  2. Step 2: Convert to fraction form
    349,728.80/524,987.40 = 231,630.80/x
  3. Step 3: Cross multiply
    349,728.80x = 524,987.40 × 231,630.80
  4. Step 4: Simplify right side
    349,728.80x = 121,603,251,451.92
  5. Step 5: Solve for x
    x = 121,603,251,451.92/349,728.80
  6. Step 6: Final answer
    x = 347,707.28

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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.