Home / 319,423.77-440,400.11-210,511.17

Finding the Fourth Proportional to 319,423.77, 440,400.11 and 210,511.17

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Solution

The fourth proportional to 319,423.77, 440,400.11 and 210,511.17 is: 290,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,423.77 : 440,400.11 = 210,511.17 : x
  2. Step 2: Convert to fraction form
    319,423.77/440,400.11 = 210,511.17/x
  3. Step 3: Cross multiply
    319,423.77x = 440,400.11 × 210,511.17
  4. Step 4: Simplify right side
    319,423.77x = 92,709,141,371.67
  5. Step 5: Solve for x
    x = 92,709,141,371.67/319,423.77
  6. Step 6: Final answer
    x = 290,238.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.