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Finding the Fourth Proportional to 221,339.01, 305,344.13 and 130,633.19

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Solution

The fourth proportional to 221,339.01, 305,344.13 and 130,633.19 is: 180,212.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,339.01 : 305,344.13 = 130,633.19 : x
  2. Step 2: Convert to fraction form
    221,339.01/305,344.13 = 130,633.19/x
  3. Step 3: Cross multiply
    221,339.01x = 305,344.13 × 130,633.19
  4. Step 4: Simplify right side
    221,339.01x = 39,888,075,569.79
  5. Step 5: Solve for x
    x = 39,888,075,569.79/221,339.01
  6. Step 6: Final answer
    x = 180,212.59

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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.