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Finding the Fourth Proportional to 148,643.80, 223,224.90 and 143,978.20

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Solution

The fourth proportional to 148,643.80, 223,224.90 and 143,978.20 is: 216,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,643.80 : 223,224.90 = 143,978.20 : x
  2. Step 2: Convert to fraction form
    148,643.80/223,224.90 = 143,978.20/x
  3. Step 3: Cross multiply
    148,643.80x = 223,224.90 × 143,978.20
  4. Step 4: Simplify right side
    148,643.80x = 32,139,519,297.18
  5. Step 5: Solve for x
    x = 32,139,519,297.18/148,643.80
  6. Step 6: Final answer
    x = 216,218.36

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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.