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Finding the Fourth Proportional to 315,851.90, 435,874.91 and 179,885.84

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Solution

The fourth proportional to 315,851.90, 435,874.91 and 179,885.84 is: 248,242.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,851.90 : 435,874.91 = 179,885.84 : x
  2. Step 2: Convert to fraction form
    315,851.90/435,874.91 = 179,885.84/x
  3. Step 3: Cross multiply
    315,851.90x = 435,874.91 × 179,885.84
  4. Step 4: Simplify right side
    315,851.90x = 78,407,721,241.47
  5. Step 5: Solve for x
    x = 78,407,721,241.47/315,851.90
  6. Step 6: Final answer
    x = 248,242.05

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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.