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Finding the Fourth Proportional to 399,303.61, 551,087.35 and 227,263.46

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Solution

The fourth proportional to 399,303.61, 551,087.35 and 227,263.46 is: 313,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,303.61 : 551,087.35 = 227,263.46 : x
  2. Step 2: Convert to fraction form
    399,303.61/551,087.35 = 227,263.46/x
  3. Step 3: Cross multiply
    399,303.61x = 551,087.35 × 227,263.46
  4. Step 4: Simplify right side
    399,303.61x = 125,242,014,599.64
  5. Step 5: Solve for x
    x = 125,242,014,599.64/399,303.61
  6. Step 6: Final answer
    x = 313,651.10

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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.