Home / 290,280.12-435,436.38-90,628.08

Finding the Fourth Proportional to 290,280.12, 435,436.38 and 90,628.08

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Solution

The fourth proportional to 290,280.12, 435,436.38 and 90,628.08 is: 135,947.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,280.12 : 435,436.38 = 90,628.08 : x
  2. Step 2: Convert to fraction form
    290,280.12/435,436.38 = 90,628.08/x
  3. Step 3: Cross multiply
    290,280.12x = 435,436.38 × 90,628.08
  4. Step 4: Simplify right side
    290,280.12x = 39,462,763,081.55
  5. Step 5: Solve for x
    x = 39,462,763,081.55/290,280.12
  6. Step 6: Final answer
    x = 135,947.18

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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.