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Finding the Fourth Proportional to 207,276.40, 310,879.81 and 57,531.90

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Solution

The fourth proportional to 207,276.40, 310,879.81 and 57,531.90 is: 86,288.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,276.40 : 310,879.81 = 57,531.90 : x
  2. Step 2: Convert to fraction form
    207,276.40/310,879.81 = 57,531.90/x
  3. Step 3: Cross multiply
    207,276.40x = 310,879.81 × 57,531.90
  4. Step 4: Simplify right side
    207,276.40x = 17,885,506,140.94
  5. Step 5: Solve for x
    x = 17,885,506,140.94/207,276.40
  6. Step 6: Final answer
    x = 86,288.19

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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.