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Finding the Fourth Proportional to 221,219.71, 305,273.48 and 124,431.64

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Solution

The fourth proportional to 221,219.71, 305,273.48 and 124,431.64 is: 171,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,219.71 : 305,273.48 = 124,431.64 : x
  2. Step 2: Convert to fraction form
    221,219.71/305,273.48 = 124,431.64/x
  3. Step 3: Cross multiply
    221,219.71x = 305,273.48 × 124,431.64
  4. Step 4: Simplify right side
    221,219.71x = 37,985,680,075.99
  5. Step 5: Solve for x
    x = 37,985,680,075.99/221,219.71
  6. Step 6: Final answer
    x = 171,710.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.