Home / 369,155.68-509,439.60-218,251.36

Finding the Fourth Proportional to 369,155.68, 509,439.60 and 218,251.36

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Solution

The fourth proportional to 369,155.68, 509,439.60 and 218,251.36 is: 301,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,155.68 : 509,439.60 = 218,251.36 : x
  2. Step 2: Convert to fraction form
    369,155.68/509,439.60 = 218,251.36/x
  3. Step 3: Cross multiply
    369,155.68x = 509,439.60 × 218,251.36
  4. Step 4: Simplify right side
    369,155.68x = 111,185,885,537.86
  5. Step 5: Solve for x
    x = 111,185,885,537.86/369,155.68
  6. Step 6: Final answer
    x = 301,189.69

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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.