Home / 213,613.90-320,420.85-55,858.30

Finding the Fourth Proportional to 213,613.90, 320,420.85 and 55,858.30

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Solution

The fourth proportional to 213,613.90, 320,420.85 and 55,858.30 is: 83,787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,613.90 : 320,420.85 = 55,858.30 : x
  2. Step 2: Convert to fraction form
    213,613.90/320,420.85 = 55,858.30/x
  3. Step 3: Cross multiply
    213,613.90x = 320,420.85 × 55,858.30
  4. Step 4: Simplify right side
    213,613.90x = 17,898,163,965.56
  5. Step 5: Solve for x
    x = 17,898,163,965.56/213,613.90
  6. Step 6: Final answer
    x = 83,787.45

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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.