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Finding the Fourth Proportional to 295,812.30, 443,718.45 and 278,316.30

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Solution

The fourth proportional to 295,812.30, 443,718.45 and 278,316.30 is: 417,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,812.30 : 443,718.45 = 278,316.30 : x
  2. Step 2: Convert to fraction form
    295,812.30/443,718.45 = 278,316.30/x
  3. Step 3: Cross multiply
    295,812.30x = 443,718.45 × 278,316.30
  4. Step 4: Simplify right side
    295,812.30x = 123,494,077,245.74
  5. Step 5: Solve for x
    x = 123,494,077,245.74/295,812.30
  6. Step 6: Final answer
    x = 417,474.45

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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.