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Finding the Fourth Proportional to 289,019.80, 433,356.90 and 149,051.80

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Solution

The fourth proportional to 289,019.80, 433,356.90 and 149,051.80 is: 223,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,019.80 : 433,356.90 = 149,051.80 : x
  2. Step 2: Convert to fraction form
    289,019.80/433,356.90 = 149,051.80/x
  3. Step 3: Cross multiply
    289,019.80x = 433,356.90 × 149,051.80
  4. Step 4: Simplify right side
    289,019.80x = 64,592,625,987.42
  5. Step 5: Solve for x
    x = 64,592,625,987.42/289,019.80
  6. Step 6: Final answer
    x = 223,488.58

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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.