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Finding the Fourth Proportional to 315,589.93, 473,384.97 and 78,932.64

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Solution

The fourth proportional to 315,589.93, 473,384.97 and 78,932.64 is: 118,398.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,589.93 : 473,384.97 = 78,932.64 : x
  2. Step 2: Convert to fraction form
    315,589.93/473,384.97 = 78,932.64/x
  3. Step 3: Cross multiply
    315,589.93x = 473,384.97 × 78,932.64
  4. Step 4: Simplify right side
    315,589.93x = 37,365,522,656.83
  5. Step 5: Solve for x
    x = 37,365,522,656.83/315,589.93
  6. Step 6: Final answer
    x = 118,398.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.