Home / 289,426.20-434,081.70-139,666.20

Finding the Fourth Proportional to 289,426.20, 434,081.70 and 139,666.20

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Solution

The fourth proportional to 289,426.20, 434,081.70 and 139,666.20 is: 209,471.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,426.20 : 434,081.70 = 139,666.20 : x
  2. Step 2: Convert to fraction form
    289,426.20/434,081.70 = 139,666.20/x
  3. Step 3: Cross multiply
    289,426.20x = 434,081.70 × 139,666.20
  4. Step 4: Simplify right side
    289,426.20x = 60,626,541,528.54
  5. Step 5: Solve for x
    x = 60,626,541,528.54/289,426.20
  6. Step 6: Final answer
    x = 209,471.50

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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.