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Finding the Fourth Proportional to 399,727.32, 551,863.98 and 249,028.44

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Solution

The fourth proportional to 399,727.32, 551,863.98 and 249,028.44 is: 343,808.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,727.32 : 551,863.98 = 249,028.44 : x
  2. Step 2: Convert to fraction form
    399,727.32/551,863.98 = 249,028.44/x
  3. Step 3: Cross multiply
    399,727.32x = 551,863.98 × 249,028.44
  4. Step 4: Simplify right side
    399,727.32x = 137,429,826,031.59
  5. Step 5: Solve for x
    x = 137,429,826,031.59/399,727.32
  6. Step 6: Final answer
    x = 343,808.94

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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.