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Finding the Fourth Proportional to 315,808.49, 473,721.38 and 105,438.89

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Solution

The fourth proportional to 315,808.49, 473,721.38 and 105,438.89 is: 158,161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,808.49 : 473,721.38 = 105,438.89 : x
  2. Step 2: Convert to fraction form
    315,808.49/473,721.38 = 105,438.89/x
  3. Step 3: Cross multiply
    315,808.49x = 473,721.38 × 105,438.89
  4. Step 4: Simplify right side
    315,808.49x = 49,948,656,476.47
  5. Step 5: Solve for x
    x = 49,948,656,476.47/315,808.49
  6. Step 6: Final answer
    x = 158,161.22

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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.