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Finding the Fourth Proportional to 403,728.80, 604,937.10 and 253,700.60

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Solution

The fourth proportional to 403,728.80, 604,937.10 and 253,700.60 is: 380,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,728.80 : 604,937.10 = 253,700.60 : x
  2. Step 2: Convert to fraction form
    403,728.80/604,937.10 = 253,700.60/x
  3. Step 3: Cross multiply
    403,728.80x = 604,937.10 × 253,700.60
  4. Step 4: Simplify right side
    403,728.80x = 153,472,905,232.26
  5. Step 5: Solve for x
    x = 153,472,905,232.26/403,728.80
  6. Step 6: Final answer
    x = 380,138.61

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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.