Home / 283,977.07-391,889.47-154,918.30

Finding the Fourth Proportional to 283,977.07, 391,889.47 and 154,918.30

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Solution

The fourth proportional to 283,977.07, 391,889.47 and 154,918.30 is: 213,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,977.07 : 391,889.47 = 154,918.30 : x
  2. Step 2: Convert to fraction form
    283,977.07/391,889.47 = 154,918.30/x
  3. Step 3: Cross multiply
    283,977.07x = 391,889.47 × 154,918.30
  4. Step 4: Simplify right side
    283,977.07x = 60,710,849,500.58
  5. Step 5: Solve for x
    x = 60,710,849,500.58/283,977.07
  6. Step 6: Final answer
    x = 213,787.86

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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.