Home / 221,417.42-305,557.23-120,817.58

Finding the Fourth Proportional to 221,417.42, 305,557.23 and 120,817.58

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Solution

The fourth proportional to 221,417.42, 305,557.23 and 120,817.58 is: 166,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,417.42 : 305,557.23 = 120,817.58 : x
  2. Step 2: Convert to fraction form
    221,417.42/305,557.23 = 120,817.58/x
  3. Step 3: Cross multiply
    221,417.42x = 305,557.23 × 120,817.58
  4. Step 4: Simplify right side
    221,417.42x = 36,916,685,080.10
  5. Step 5: Solve for x
    x = 36,916,685,080.10/221,417.42
  6. Step 6: Final answer
    x = 166,728.91

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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.