Home / 289,921.40-434,882.10-171,531.80

Finding the Fourth Proportional to 289,921.40, 434,882.10 and 171,531.80

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Solution

The fourth proportional to 289,921.40, 434,882.10 and 171,531.80 is: 257,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,921.40 : 434,882.10 = 171,531.80 : x
  2. Step 2: Convert to fraction form
    289,921.40/434,882.10 = 171,531.80/x
  3. Step 3: Cross multiply
    289,921.40x = 434,882.10 × 171,531.80
  4. Step 4: Simplify right side
    289,921.40x = 74,596,109,400.78
  5. Step 5: Solve for x
    x = 74,596,109,400.78/289,921.40
  6. Step 6: Final answer
    x = 257,297.70

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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.