Home / 289,905.50-434,899.27-90,246.07

Finding the Fourth Proportional to 289,905.50, 434,899.27 and 90,246.07

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Solution

The fourth proportional to 289,905.50, 434,899.27 and 90,246.07 is: 135,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,905.50 : 434,899.27 = 90,246.07 : x
  2. Step 2: Convert to fraction form
    289,905.50/434,899.27 = 90,246.07/x
  3. Step 3: Cross multiply
    289,905.50x = 434,899.27 × 90,246.07
  4. Step 4: Simplify right side
    289,905.50x = 39,247,949,963.37
  5. Step 5: Solve for x
    x = 39,247,949,963.37/289,905.50
  6. Step 6: Final answer
    x = 135,381.87

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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.