Home / 208,510.64-312,766-83,822.48

Finding the Fourth Proportional to 208,510.64, 312,766 and 83,822.48

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Solution

The fourth proportional to 208,510.64, 312,766 and 83,822.48 is: 125,733.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,510.64 : 312,766 = 83,822.48 : x
  2. Step 2: Convert to fraction form
    208,510.64/312,766 = 83,822.48/x
  3. Step 3: Cross multiply
    208,510.64x = 312,766 × 83,822.48
  4. Step 4: Simplify right side
    208,510.64x = 26,216,821,779.68
  5. Step 5: Solve for x
    x = 26,216,821,779.68/208,510.64
  6. Step 6: Final answer
    x = 125,733.74

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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.