Home / 289,947.08-434,417.10-156,918.92

Finding the Fourth Proportional to 289,947.08, 434,417.10 and 156,918.92

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Solution

The fourth proportional to 289,947.08, 434,417.10 and 156,918.92 is: 235,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,947.08 : 434,417.10 = 156,918.92 : x
  2. Step 2: Convert to fraction form
    289,947.08/434,417.10 = 156,918.92/x
  3. Step 3: Cross multiply
    289,947.08x = 434,417.10 × 156,918.92
  4. Step 4: Simplify right side
    289,947.08x = 68,168,262,161.53
  5. Step 5: Solve for x
    x = 68,168,262,161.53/289,947.08
  6. Step 6: Final answer
    x = 235,105.88

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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.