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Finding the Fourth Proportional to 315,490.02, 435,372.93 and 172,249.62

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Solution

The fourth proportional to 315,490.02, 435,372.93 and 172,249.62 is: 237,702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,490.02 : 435,372.93 = 172,249.62 : x
  2. Step 2: Convert to fraction form
    315,490.02/435,372.93 = 172,249.62/x
  3. Step 3: Cross multiply
    315,490.02x = 435,372.93 × 172,249.62
  4. Step 4: Simplify right side
    315,490.02x = 74,992,821,750.79
  5. Step 5: Solve for x
    x = 74,992,821,750.79/315,490.02
  6. Step 6: Final answer
    x = 237,702.68

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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.