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Finding the Fourth Proportional to 315,930.72, 473,487.84 and 236,421.12

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Solution

The fourth proportional to 315,930.72, 473,487.84 and 236,421.12 is: 354,326.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,930.72 : 473,487.84 = 236,421.12 : x
  2. Step 2: Convert to fraction form
    315,930.72/473,487.84 = 236,421.12/x
  3. Step 3: Cross multiply
    315,930.72x = 473,487.84 × 236,421.12
  4. Step 4: Simplify right side
    315,930.72x = 111,942,525,439.18
  5. Step 5: Solve for x
    x = 111,942,525,439.18/315,930.72
  6. Step 6: Final answer
    x = 354,326.18

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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.