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Finding the Fourth Proportional to 316,045.57, 436,261.49 and 207,156.92

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Solution

The fourth proportional to 316,045.57, 436,261.49 and 207,156.92 is: 285,954.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,045.57 : 436,261.49 = 207,156.92 : x
  2. Step 2: Convert to fraction form
    316,045.57/436,261.49 = 207,156.92/x
  3. Step 3: Cross multiply
    316,045.57x = 436,261.49 × 207,156.92
  4. Step 4: Simplify right side
    316,045.57x = 90,374,587,414.72
  5. Step 5: Solve for x
    x = 90,374,587,414.72/316,045.57
  6. Step 6: Final answer
    x = 285,954.29

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1.5x scale

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.