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Finding the Fourth Proportional to 315,933.88, 473,900.81 and 126,479.53

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Solution

The fourth proportional to 315,933.88, 473,900.81 and 126,479.53 is: 189,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,933.88 : 473,900.81 = 126,479.53 : x
  2. Step 2: Convert to fraction form
    315,933.88/473,900.81 = 126,479.53/x
  3. Step 3: Cross multiply
    315,933.88x = 473,900.81 × 126,479.53
  4. Step 4: Simplify right side
    315,933.88x = 59,938,751,715.42
  5. Step 5: Solve for x
    x = 59,938,751,715.42/315,933.88
  6. Step 6: Final answer
    x = 189,719.29

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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.