Home / 289,585.40-434,378.10-156,725.15

Finding the Fourth Proportional to 289,585.40, 434,378.10 and 156,725.15

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Solution

The fourth proportional to 289,585.40, 434,378.10 and 156,725.15 is: 235,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,585.40 : 434,378.10 = 156,725.15 : x
  2. Step 2: Convert to fraction form
    289,585.40/434,378.10 = 156,725.15/x
  3. Step 3: Cross multiply
    289,585.40x = 434,378.10 × 156,725.15
  4. Step 4: Simplify right side
    289,585.40x = 68,077,972,879.22
  5. Step 5: Solve for x
    x = 68,077,972,879.22/289,585.40
  6. Step 6: Final answer
    x = 235,087.73

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1.5x scale

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.