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Finding the Fourth Proportional to 550,373.81, 758,812.80 and 356,438.85

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Solution

The fourth proportional to 550,373.81, 758,812.80 and 356,438.85 is: 491,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,373.81 : 758,812.80 = 356,438.85 : x
  2. Step 2: Convert to fraction form
    550,373.81/758,812.80 = 356,438.85/x
  3. Step 3: Cross multiply
    550,373.81x = 758,812.80 × 356,438.85
  4. Step 4: Simplify right side
    550,373.81x = 270,470,364,184.65
  5. Step 5: Solve for x
    x = 270,470,364,184.65/550,373.81
  6. Step 6: Final answer
    x = 491,430.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.