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Finding the Fourth Proportional to 207,079.75, 310,620.06 and 57,320.47

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Solution

The fourth proportional to 207,079.75, 310,620.06 and 57,320.47 is: 85,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,079.75 : 310,620.06 = 57,320.47 : x
  2. Step 2: Convert to fraction form
    207,079.75/310,620.06 = 57,320.47/x
  3. Step 3: Cross multiply
    207,079.75x = 310,620.06 × 57,320.47
  4. Step 4: Simplify right side
    207,079.75x = 17,804,887,830.63
  5. Step 5: Solve for x
    x = 17,804,887,830.63/207,079.75
  6. Step 6: Final answer
    x = 85,980.83

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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.