Home / 239,780.18-330,904.66-130,890.98

Finding the Fourth Proportional to 239,780.18, 330,904.66 and 130,890.98

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Solution

The fourth proportional to 239,780.18, 330,904.66 and 130,890.98 is: 180,633.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,780.18 : 330,904.66 = 130,890.98 : x
  2. Step 2: Convert to fraction form
    239,780.18/330,904.66 = 130,890.98/x
  3. Step 3: Cross multiply
    239,780.18x = 330,904.66 × 130,890.98
  4. Step 4: Simplify right side
    239,780.18x = 43,312,433,252.22
  5. Step 5: Solve for x
    x = 43,312,433,252.22/239,780.18
  6. Step 6: Final answer
    x = 180,633.92

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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.