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Finding the Fourth Proportional to 311,693.51, 429,937.58 and 216,165.35

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Solution

The fourth proportional to 311,693.51, 429,937.58 and 216,165.35 is: 298,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,693.51 : 429,937.58 = 216,165.35 : x
  2. Step 2: Convert to fraction form
    311,693.51/429,937.58 = 216,165.35/x
  3. Step 3: Cross multiply
    311,693.51x = 429,937.58 × 216,165.35
  4. Step 4: Simplify right side
    311,693.51x = 92,937,605,849.58
  5. Step 5: Solve for x
    x = 92,937,605,849.58/311,693.51
  6. Step 6: Final answer
    x = 298,169.85

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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.