Home / 289,870.12-434,601.49-127,687.22

Finding the Fourth Proportional to 289,870.12, 434,601.49 and 127,687.22

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Solution

The fourth proportional to 289,870.12, 434,601.49 and 127,687.22 is: 191,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,870.12 : 434,601.49 = 127,687.22 : x
  2. Step 2: Convert to fraction form
    289,870.12/434,601.49 = 127,687.22/x
  3. Step 3: Cross multiply
    289,870.12x = 434,601.49 × 127,687.22
  4. Step 4: Simplify right side
    289,870.12x = 55,493,056,065.96
  5. Step 5: Solve for x
    x = 55,493,056,065.96/289,870.12
  6. Step 6: Final answer
    x = 191,441.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.