Home / 289,381.04-399,326.55-160,310.84

Finding the Fourth Proportional to 289,381.04, 399,326.55 and 160,310.84

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Solution

The fourth proportional to 289,381.04, 399,326.55 and 160,310.84 is: 221,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,381.04 : 399,326.55 = 160,310.84 : x
  2. Step 2: Convert to fraction form
    289,381.04/399,326.55 = 160,310.84/x
  3. Step 3: Cross multiply
    289,381.04x = 399,326.55 × 160,310.84
  4. Step 4: Simplify right side
    289,381.04x = 64,016,372,668.17
  5. Step 5: Solve for x
    x = 64,016,372,668.17/289,381.04
  6. Step 6: Final answer
    x = 221,218.27

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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.