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Finding the Fourth Proportional to 480,978.45, 663,741.51 and 266,118.52

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Solution

The fourth proportional to 480,978.45, 663,741.51 and 266,118.52 is: 367,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,978.45 : 663,741.51 = 266,118.52 : x
  2. Step 2: Convert to fraction form
    480,978.45/663,741.51 = 266,118.52/x
  3. Step 3: Cross multiply
    480,978.45x = 663,741.51 × 266,118.52
  4. Step 4: Simplify right side
    480,978.45x = 176,633,907,502.93
  5. Step 5: Solve for x
    x = 176,633,907,502.93/480,978.45
  6. Step 6: Final answer
    x = 367,238.71

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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.