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Finding the Fourth Proportional to 356,651.30, 492,335.85 and 249,641.39

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Solution

The fourth proportional to 356,651.30, 492,335.85 and 249,641.39 is: 344,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,651.30 : 492,335.85 = 249,641.39 : x
  2. Step 2: Convert to fraction form
    356,651.30/492,335.85 = 249,641.39/x
  3. Step 3: Cross multiply
    356,651.30x = 492,335.85 × 249,641.39
  4. Step 4: Simplify right side
    356,651.30x = 122,907,403,479.15
  5. Step 5: Solve for x
    x = 122,907,403,479.15/356,651.30
  6. Step 6: Final answer
    x = 344,615.05

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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.