Home / 389,976.58-584,965.05-140,658.58

Finding the Fourth Proportional to 389,976.58, 584,965.05 and 140,658.58

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Solution

The fourth proportional to 389,976.58, 584,965.05 and 140,658.58 is: 210,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,976.58 : 584,965.05 = 140,658.58 : x
  2. Step 2: Convert to fraction form
    389,976.58/584,965.05 = 140,658.58/x
  3. Step 3: Cross multiply
    389,976.58x = 584,965.05 × 140,658.58
  4. Step 4: Simplify right side
    389,976.58x = 82,280,353,282.63
  5. Step 5: Solve for x
    x = 82,280,353,282.63/389,976.58
  6. Step 6: Final answer
    x = 210,987.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.