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Finding the Fourth Proportional to 478,549.58, 660,427.83 and 263,689.61

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Solution

The fourth proportional to 478,549.58, 660,427.83 and 263,689.61 is: 363,907.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,549.58 : 660,427.83 = 263,689.61 : x
  2. Step 2: Convert to fraction form
    478,549.58/660,427.83 = 263,689.61/x
  3. Step 3: Cross multiply
    478,549.58x = 660,427.83 × 263,689.61
  4. Step 4: Simplify right side
    478,549.58x = 174,147,953,623.71
  5. Step 5: Solve for x
    x = 174,147,953,623.71/478,549.58
  6. Step 6: Final answer
    x = 363,907.86

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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.