Home / 217,443.04-300,145.08-137,005.36

Finding the Fourth Proportional to 217,443.04, 300,145.08 and 137,005.36

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Solution

The fourth proportional to 217,443.04, 300,145.08 and 137,005.36 is: 189,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,443.04 : 300,145.08 = 137,005.36 : x
  2. Step 2: Convert to fraction form
    217,443.04/300,145.08 = 137,005.36/x
  3. Step 3: Cross multiply
    217,443.04x = 300,145.08 × 137,005.36
  4. Step 4: Simplify right side
    217,443.04x = 41,121,484,737.63
  5. Step 5: Solve for x
    x = 41,121,484,737.63/217,443.04
  6. Step 6: Final answer
    x = 189,113.82

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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.