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Finding the Fourth Proportional to 389,995.46, 584,563.84 and 255,003.86

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Solution

The fourth proportional to 389,995.46, 584,563.84 and 255,003.86 is: 382,225.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,995.46 : 584,563.84 = 255,003.86 : x
  2. Step 2: Convert to fraction form
    389,995.46/584,563.84 = 255,003.86/x
  3. Step 3: Cross multiply
    389,995.46x = 584,563.84 × 255,003.86
  4. Step 4: Simplify right side
    389,995.46x = 149,066,036,440.32
  5. Step 5: Solve for x
    x = 149,066,036,440.32/389,995.46
  6. Step 6: Final answer
    x = 382,225.06

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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.