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Finding the Fourth Proportional to 315,094.56, 472,641.84 and 128,062.24

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Solution

The fourth proportional to 315,094.56, 472,641.84 and 128,062.24 is: 192,093.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,094.56 : 472,641.84 = 128,062.24 : x
  2. Step 2: Convert to fraction form
    315,094.56/472,641.84 = 128,062.24/x
  3. Step 3: Cross multiply
    315,094.56x = 472,641.84 × 128,062.24
  4. Step 4: Simplify right side
    315,094.56x = 60,527,572,748.12
  5. Step 5: Solve for x
    x = 60,527,572,748.12/315,094.56
  6. Step 6: Final answer
    x = 192,093.36

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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.