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Finding the Fourth Proportional to 315,389.30, 473,213.55 and 115,805.30

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Solution

The fourth proportional to 315,389.30, 473,213.55 and 115,805.30 is: 173,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,389.30 : 473,213.55 = 115,805.30 : x
  2. Step 2: Convert to fraction form
    315,389.30/473,213.55 = 115,805.30/x
  3. Step 3: Cross multiply
    315,389.30x = 473,213.55 × 115,805.30
  4. Step 4: Simplify right side
    315,389.30x = 54,800,637,121.82
  5. Step 5: Solve for x
    x = 54,800,637,121.82/315,389.30
  6. Step 6: Final answer
    x = 173,755.54

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1.5x scale

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.