Home / 274,136.18-378,290.40-153,287.42

Finding the Fourth Proportional to 274,136.18, 378,290.40 and 153,287.42

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Solution

The fourth proportional to 274,136.18, 378,290.40 and 153,287.42 is: 211,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,136.18 : 378,290.40 = 153,287.42 : x
  2. Step 2: Convert to fraction form
    274,136.18/378,290.40 = 153,287.42/x
  3. Step 3: Cross multiply
    274,136.18x = 378,290.40 × 153,287.42
  4. Step 4: Simplify right side
    274,136.18x = 57,987,159,426.77
  5. Step 5: Solve for x
    x = 57,987,159,426.77/274,136.18
  6. Step 6: Final answer
    x = 211,526.84

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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.