Home / 289,922.18-434,779.05-100,331.07

Finding the Fourth Proportional to 289,922.18, 434,779.05 and 100,331.07

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Solution

The fourth proportional to 289,922.18, 434,779.05 and 100,331.07 is: 150,460.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,922.18 : 434,779.05 = 100,331.07 : x
  2. Step 2: Convert to fraction form
    289,922.18/434,779.05 = 100,331.07/x
  3. Step 3: Cross multiply
    289,922.18x = 434,779.05 × 100,331.07
  4. Step 4: Simplify right side
    289,922.18x = 43,621,847,300.08
  5. Step 5: Solve for x
    x = 43,621,847,300.08/289,922.18
  6. Step 6: Final answer
    x = 150,460.54

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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.