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Finding the Fourth Proportional to 206,418.70, 310,327.95 and 164,830.06

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Solution

The fourth proportional to 206,418.70, 310,327.95 and 164,830.06 is: 247,803.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,418.70 : 310,327.95 = 164,830.06 : x
  2. Step 2: Convert to fraction form
    206,418.70/310,327.95 = 164,830.06/x
  3. Step 3: Cross multiply
    206,418.70x = 310,327.95 × 164,830.06
  4. Step 4: Simplify right side
    206,418.70x = 51,151,374,618.18
  5. Step 5: Solve for x
    x = 51,151,374,618.18/206,418.70
  6. Step 6: Final answer
    x = 247,803.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.