Home / 311,867.70-430,385.28-191,075.60

Finding the Fourth Proportional to 311,867.70, 430,385.28 and 191,075.60

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Solution

The fourth proportional to 311,867.70, 430,385.28 and 191,075.60 is: 263,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,867.70 : 430,385.28 = 191,075.60 : x
  2. Step 2: Convert to fraction form
    311,867.70/430,385.28 = 191,075.60/x
  3. Step 3: Cross multiply
    311,867.70x = 430,385.28 × 191,075.60
  4. Step 4: Simplify right side
    311,867.70x = 82,236,125,607.17
  5. Step 5: Solve for x
    x = 82,236,125,607.17/311,867.70
  6. Step 6: Final answer
    x = 263,689.14

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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.