Home / 289,444.08-434,446.38-139,789.56

Finding the Fourth Proportional to 289,444.08, 434,446.38 and 139,789.56

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Solution

The fourth proportional to 289,444.08, 434,446.38 and 139,789.56 is: 209,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,444.08 : 434,446.38 = 139,789.56 : x
  2. Step 2: Convert to fraction form
    289,444.08/434,446.38 = 139,789.56/x
  3. Step 3: Cross multiply
    289,444.08x = 434,446.38 × 139,789.56
  4. Step 4: Simplify right side
    289,444.08x = 60,731,068,303.79
  5. Step 5: Solve for x
    x = 60,731,068,303.79/289,444.08
  6. Step 6: Final answer
    x = 209,819.69

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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.