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Finding the Fourth Proportional to 258,161.92, 356,320.33 and 143,479.94

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Solution

The fourth proportional to 258,161.92, 356,320.33 and 143,479.94 is: 198,033.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,161.92 : 356,320.33 = 143,479.94 : x
  2. Step 2: Convert to fraction form
    258,161.92/356,320.33 = 143,479.94/x
  3. Step 3: Cross multiply
    258,161.92x = 356,320.33 × 143,479.94
  4. Step 4: Simplify right side
    258,161.92x = 51,124,817,428.88
  5. Step 5: Solve for x
    x = 51,124,817,428.88/258,161.92
  6. Step 6: Final answer
    x = 198,033.92

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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.