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Finding the Fourth Proportional to 211,355.31, 291,672.08 and 115,870.83

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Solution

The fourth proportional to 211,355.31, 291,672.08 and 115,870.83 is: 159,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,355.31 : 291,672.08 = 115,870.83 : x
  2. Step 2: Convert to fraction form
    211,355.31/291,672.08 = 115,870.83/x
  3. Step 3: Cross multiply
    211,355.31x = 291,672.08 × 115,870.83
  4. Step 4: Simplify right side
    211,355.31x = 33,796,285,418.07
  5. Step 5: Solve for x
    x = 33,796,285,418.07/211,355.31
  6. Step 6: Final answer
    x = 159,902.70

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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.