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Finding the Fourth Proportional to 978,246.30, 1,467,369.45 and 268,346.10

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Solution

The fourth proportional to 978,246.30, 1,467,369.45 and 268,346.10 is: 402,519.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,246.30 : 1,467,369.45 = 268,346.10 : x
  2. Step 2: Convert to fraction form
    978,246.30/1,467,369.45 = 268,346.10/x
  3. Step 3: Cross multiply
    978,246.30x = 1,467,369.45 × 268,346.10
  4. Step 4: Simplify right side
    978,246.30x = 393,762,869,166.65
  5. Step 5: Solve for x
    x = 393,762,869,166.65/978,246.30
  6. Step 6: Final answer
    x = 402,519.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.