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Finding the Fourth Proportional to 399,288.53, 551,266.88 and 254,176.22

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Solution

The fourth proportional to 399,288.53, 551,266.88 and 254,176.22 is: 350,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,288.53 : 551,266.88 = 254,176.22 : x
  2. Step 2: Convert to fraction form
    399,288.53/551,266.88 = 254,176.22/x
  3. Step 3: Cross multiply
    399,288.53x = 551,266.88 × 254,176.22
  4. Step 4: Simplify right side
    399,288.53x = 140,118,927,742.38
  5. Step 5: Solve for x
    x = 140,118,927,742.38/399,288.53
  6. Step 6: Final answer
    x = 350,921.50

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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.