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Finding the Fourth Proportional to 289,418.84, 431,561.84 and 270,114.92

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Solution

The fourth proportional to 289,418.84, 431,561.84 and 270,114.92 is: 402,777.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,418.84 : 431,561.84 = 270,114.92 : x
  2. Step 2: Convert to fraction form
    289,418.84/431,561.84 = 270,114.92/x
  3. Step 3: Cross multiply
    289,418.84x = 431,561.84 × 270,114.92
  4. Step 4: Simplify right side
    289,418.84x = 116,571,291,886.65
  5. Step 5: Solve for x
    x = 116,571,291,886.65/289,418.84
  6. Step 6: Final answer
    x = 402,777.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.