Home / 283,900.19-391,809.69-212,155.65

Finding the Fourth Proportional to 283,900.19, 391,809.69 and 212,155.65

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Solution

The fourth proportional to 283,900.19, 391,809.69 and 212,155.65 is: 292,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,900.19 : 391,809.69 = 212,155.65 : x
  2. Step 2: Convert to fraction form
    283,900.19/391,809.69 = 212,155.65/x
  3. Step 3: Cross multiply
    283,900.19x = 391,809.69 × 212,155.65
  4. Step 4: Simplify right side
    283,900.19x = 83,124,639,458.25
  5. Step 5: Solve for x
    x = 83,124,639,458.25/283,900.19
  6. Step 6: Final answer
    x = 292,795.30

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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.