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Finding the Fourth Proportional to 487,652.94, 672,961.64 and 269,870.64

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Solution

The fourth proportional to 487,652.94, 672,961.64 and 269,870.64 is: 372,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,652.94 : 672,961.64 = 269,870.64 : x
  2. Step 2: Convert to fraction form
    487,652.94/672,961.64 = 269,870.64/x
  3. Step 3: Cross multiply
    487,652.94x = 672,961.64 × 269,870.64
  4. Step 4: Simplify right side
    487,652.94x = 181,612,584,609.29
  5. Step 5: Solve for x
    x = 181,612,584,609.29/487,652.94
  6. Step 6: Final answer
    x = 372,421.80

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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.