Home / 280,073,399.40-420,110,099.10-98,338,948.20

Finding the Fourth Proportional to 280,073,399.40, 420,110,099.10 and 98,338,948.20

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Solution

The fourth proportional to 280,073,399.40, 420,110,099.10 and 98,338,948.20 is: 147,508,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,073,399.40 : 420,110,099.10 = 98,338,948.20 : x
  2. Step 2: Convert to fraction form
    280,073,399.40/420,110,099.10 = 98,338,948.20/x
  3. Step 3: Cross multiply
    280,073,399.40x = 420,110,099.10 × 98,338,948.20
  4. Step 4: Simplify right side
    280,073,399.40x = 41,313,185,273,691,768
  5. Step 5: Solve for x
    x = 41,313,185,273,691,768/280,073,399.40
  6. Step 6: Final answer
    x = 147,508,422.30

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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.