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Finding the Fourth Proportional to 208,257.52, 312,510.64 and 191,317.68

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Solution

The fourth proportional to 208,257.52, 312,510.64 and 191,317.68 is: 287,090.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,257.52 : 312,510.64 = 191,317.68 : x
  2. Step 2: Convert to fraction form
    208,257.52/312,510.64 = 191,317.68/x
  3. Step 3: Cross multiply
    208,257.52x = 312,510.64 × 191,317.68
  4. Step 4: Simplify right side
    208,257.52x = 59,788,810,620.12
  5. Step 5: Solve for x
    x = 59,788,810,620.12/208,257.52
  6. Step 6: Final answer
    x = 287,090.76

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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.