Home / 389,975.58-584,963.55-140,657.58

Finding the Fourth Proportional to 389,975.58, 584,963.55 and 140,657.58

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Solution

The fourth proportional to 389,975.58, 584,963.55 and 140,657.58 is: 210,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,975.58 : 584,963.55 = 140,657.58 : x
  2. Step 2: Convert to fraction form
    389,975.58/584,963.55 = 140,657.58/x
  3. Step 3: Cross multiply
    389,975.58x = 584,963.55 × 140,657.58
  4. Step 4: Simplify right side
    389,975.58x = 82,279,557,331.21
  5. Step 5: Solve for x
    x = 82,279,557,331.21/389,975.58
  6. Step 6: Final answer
    x = 210,986.43

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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.