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Finding the Fourth Proportional to 351,924.75, 485,118.72 and 215,706.24

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Solution

The fourth proportional to 351,924.75, 485,118.72 and 215,706.24 is: 297,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,924.75 : 485,118.72 = 215,706.24 : x
  2. Step 2: Convert to fraction form
    351,924.75/485,118.72 = 215,706.24/x
  3. Step 3: Cross multiply
    351,924.75x = 485,118.72 × 215,706.24
  4. Step 4: Simplify right side
    351,924.75x = 104,643,135,044.81
  5. Step 5: Solve for x
    x = 104,643,135,044.81/351,924.75
  6. Step 6: Final answer
    x = 297,345.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.