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Finding the Fourth Proportional to 399,307.86, 551,037.45 and 227,222.01

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Solution

The fourth proportional to 399,307.86, 551,037.45 and 227,222.01 is: 313,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,307.86 : 551,037.45 = 227,222.01 : x
  2. Step 2: Convert to fraction form
    399,307.86/551,037.45 = 227,222.01/x
  3. Step 3: Cross multiply
    399,307.86x = 551,037.45 × 227,222.01
  4. Step 4: Simplify right side
    399,307.86x = 125,207,834,219.09
  5. Step 5: Solve for x
    x = 125,207,834,219.09/399,307.86
  6. Step 6: Final answer
    x = 313,562.16

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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.