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Finding the Fourth Proportional to 387,855.72, 535,192.74 and 224,540.04

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Solution

The fourth proportional to 387,855.72, 535,192.74 and 224,540.04 is: 309,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,855.72 : 535,192.74 = 224,540.04 : x
  2. Step 2: Convert to fraction form
    387,855.72/535,192.74 = 224,540.04/x
  3. Step 3: Cross multiply
    387,855.72x = 535,192.74 × 224,540.04
  4. Step 4: Simplify right side
    387,855.72x = 120,172,199,247.31
  5. Step 5: Solve for x
    x = 120,172,199,247.31/387,855.72
  6. Step 6: Final answer
    x = 309,837.38

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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.