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Finding the Fourth Proportional to 315,479.90, 473,295.18 and 105,119.66

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Solution

The fourth proportional to 315,479.90, 473,295.18 and 105,119.66 is: 157,704.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,479.90 : 473,295.18 = 105,119.66 : x
  2. Step 2: Convert to fraction form
    315,479.90/473,295.18 = 105,119.66/x
  3. Step 3: Cross multiply
    315,479.90x = 473,295.18 × 105,119.66
  4. Step 4: Simplify right side
    315,479.90x = 49,752,628,401.24
  5. Step 5: Solve for x
    x = 49,752,628,401.24/315,479.90
  6. Step 6: Final answer
    x = 157,704.59

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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.