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Finding the Fourth Proportional to 285,492.90, 393,964.68 and 158,160.90

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Solution

The fourth proportional to 285,492.90, 393,964.68 and 158,160.90 is: 218,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,492.90 : 393,964.68 = 158,160.90 : x
  2. Step 2: Convert to fraction form
    285,492.90/393,964.68 = 158,160.90/x
  3. Step 3: Cross multiply
    285,492.90x = 393,964.68 × 158,160.90
  4. Step 4: Simplify right side
    285,492.90x = 62,309,808,357.01
  5. Step 5: Solve for x
    x = 62,309,808,357.01/285,492.90
  6. Step 6: Final answer
    x = 218,253.44

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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.