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Finding the Fourth Proportional to 211,285.48, 316,813.74 and 92,818.12

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Solution

The fourth proportional to 211,285.48, 316,813.74 and 92,818.12 is: 139,176.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,285.48 : 316,813.74 = 92,818.12 : x
  2. Step 2: Convert to fraction form
    211,285.48/316,813.74 = 92,818.12/x
  3. Step 3: Cross multiply
    211,285.48x = 316,813.74 × 92,818.12
  4. Step 4: Simplify right side
    211,285.48x = 29,406,055,736.97
  5. Step 5: Solve for x
    x = 29,406,055,736.97/211,285.48
  6. Step 6: Final answer
    x = 139,176.89

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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.