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Finding the Fourth Proportional to 315,589.86, 435,494.88 and 172,320.84

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Solution

The fourth proportional to 315,589.86, 435,494.88 and 172,320.84 is: 237,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,589.86 : 435,494.88 = 172,320.84 : x
  2. Step 2: Convert to fraction form
    315,589.86/435,494.88 = 172,320.84/x
  3. Step 3: Cross multiply
    315,589.86x = 435,494.88 × 172,320.84
  4. Step 4: Simplify right side
    315,589.86x = 75,044,843,537.30
  5. Step 5: Solve for x
    x = 75,044,843,537.30/315,589.86
  6. Step 6: Final answer
    x = 237,792.32

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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.