Home / 289,273.81-432,151.59-187,240.69

Finding the Fourth Proportional to 289,273.81, 432,151.59 and 187,240.69

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Solution

The fourth proportional to 289,273.81, 432,151.59 and 187,240.69 is: 279,722.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,273.81 : 432,151.59 = 187,240.69 : x
  2. Step 2: Convert to fraction form
    289,273.81/432,151.59 = 187,240.69/x
  3. Step 3: Cross multiply
    289,273.81x = 432,151.59 × 187,240.69
  4. Step 4: Simplify right side
    289,273.81x = 80,916,361,900.64
  5. Step 5: Solve for x
    x = 80,916,361,900.64/289,273.81
  6. Step 6: Final answer
    x = 279,722.39

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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.