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Finding the Fourth Proportional to 478,641.15, 660,521.52 and 263,781.36

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Solution

The fourth proportional to 478,641.15, 660,521.52 and 263,781.36 is: 364,016.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,641.15 : 660,521.52 = 263,781.36 : x
  2. Step 2: Convert to fraction form
    478,641.15/660,521.52 = 263,781.36/x
  3. Step 3: Cross multiply
    478,641.15x = 660,521.52 × 263,781.36
  4. Step 4: Simplify right side
    478,641.15x = 174,233,264,854.87
  5. Step 5: Solve for x
    x = 174,233,264,854.87/478,641.15
  6. Step 6: Final answer
    x = 364,016.48

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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.