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Finding the Fourth Proportional to 279,341.97, 385,492.23 and 156,817.32

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Solution

The fourth proportional to 279,341.97, 385,492.23 and 156,817.32 is: 216,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,341.97 : 385,492.23 = 156,817.32 : x
  2. Step 2: Convert to fraction form
    279,341.97/385,492.23 = 156,817.32/x
  3. Step 3: Cross multiply
    279,341.97x = 385,492.23 × 156,817.32
  4. Step 4: Simplify right side
    279,341.97x = 60,451,858,389.42
  5. Step 5: Solve for x
    x = 60,451,858,389.42/279,341.97
  6. Step 6: Final answer
    x = 216,408.08

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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.