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Finding the Fourth Proportional to 399,070.84, 550,812.02 and 229,403.40

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Solution

The fourth proportional to 399,070.84, 550,812.02 and 229,403.40 is: 316,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,070.84 : 550,812.02 = 229,403.40 : x
  2. Step 2: Convert to fraction form
    399,070.84/550,812.02 = 229,403.40/x
  3. Step 3: Cross multiply
    399,070.84x = 550,812.02 × 229,403.40
  4. Step 4: Simplify right side
    399,070.84x = 126,358,150,148.87
  5. Step 5: Solve for x
    x = 126,358,150,148.87/399,070.84
  6. Step 6: Final answer
    x = 316,630.88

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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.