Home / 280,552.55-420,888.00-90,998.19

Finding the Fourth Proportional to 280,552.55, 420,888.00 and 90,998.19

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Solution

The fourth proportional to 280,552.55, 420,888.00 and 90,998.19 is: 136,516.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,552.55 : 420,888.00 = 90,998.19 : x
  2. Step 2: Convert to fraction form
    280,552.55/420,888.00 = 90,998.19/x
  3. Step 3: Cross multiply
    280,552.55x = 420,888.00 × 90,998.19
  4. Step 4: Simplify right side
    280,552.55x = 38,300,046,533.96
  5. Step 5: Solve for x
    x = 38,300,046,533.96/280,552.55
  6. Step 6: Final answer
    x = 136,516.48

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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.