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Finding the Fourth Proportional to 315,935.70, 473,903.55 and 79,286.10

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Solution

The fourth proportional to 315,935.70, 473,903.55 and 79,286.10 is: 118,929.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,935.70 : 473,903.55 = 79,286.10 : x
  2. Step 2: Convert to fraction form
    315,935.70/473,903.55 = 79,286.10/x
  3. Step 3: Cross multiply
    315,935.70x = 473,903.55 × 79,286.10
  4. Step 4: Simplify right side
    315,935.70x = 37,573,964,255.66
  5. Step 5: Solve for x
    x = 37,573,964,255.66/315,935.70
  6. Step 6: Final answer
    x = 118,929.15

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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.