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Finding the Fourth Proportional to 207,040.80, 310,561.20 and 183,421.20

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Solution

The fourth proportional to 207,040.80, 310,561.20 and 183,421.20 is: 275,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,040.80 : 310,561.20 = 183,421.20 : x
  2. Step 2: Convert to fraction form
    207,040.80/310,561.20 = 183,421.20/x
  3. Step 3: Cross multiply
    207,040.80x = 310,561.20 × 183,421.20
  4. Step 4: Simplify right side
    207,040.80x = 56,963,507,977.44
  5. Step 5: Solve for x
    x = 56,963,507,977.44/207,040.80
  6. Step 6: Final answer
    x = 275,131.80

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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.