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Finding the Fourth Proportional to 279,210.57, 385,310.30 and 151,885.86

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Solution

The fourth proportional to 279,210.57, 385,310.30 and 151,885.86 is: 209,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,210.57 : 385,310.30 = 151,885.86 : x
  2. Step 2: Convert to fraction form
    279,210.57/385,310.30 = 151,885.86/x
  3. Step 3: Cross multiply
    279,210.57x = 385,310.30 × 151,885.86
  4. Step 4: Simplify right side
    279,210.57x = 58,523,185,522.93
  5. Step 5: Solve for x
    x = 58,523,185,522.93/279,210.57
  6. Step 6: Final answer
    x = 209,602.33

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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.