Home / 261,320.34-391,485.99-154,384.56

Finding the Fourth Proportional to 261,320.34, 391,485.99 and 154,384.56

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Solution

The fourth proportional to 261,320.34, 391,485.99 and 154,384.56 is: 231,284.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,320.34 : 391,485.99 = 154,384.56 : x
  2. Step 2: Convert to fraction form
    261,320.34/391,485.99 = 154,384.56/x
  3. Step 3: Cross multiply
    261,320.34x = 391,485.99 × 154,384.56
  4. Step 4: Simplify right side
    261,320.34x = 60,439,392,312.31
  5. Step 5: Solve for x
    x = 60,439,392,312.31/261,320.34
  6. Step 6: Final answer
    x = 231,284.68

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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.