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Finding the Fourth Proportional to 520,040.22, 717,604.47 and 293,641.98

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Solution

The fourth proportional to 520,040.22, 717,604.47 and 293,641.98 is: 405,197.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,040.22 : 717,604.47 = 293,641.98 : x
  2. Step 2: Convert to fraction form
    520,040.22/717,604.47 = 293,641.98/x
  3. Step 3: Cross multiply
    520,040.22x = 717,604.47 × 293,641.98
  4. Step 4: Simplify right side
    520,040.22x = 210,718,797,427.65
  5. Step 5: Solve for x
    x = 210,718,797,427.65/520,040.22
  6. Step 6: Final answer
    x = 405,197.12

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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.