Home / 280,073,400.30-420,110,100.45-252,332,180.10

Finding the Fourth Proportional to 280,073,400.30, 420,110,100.45 and 252,332,180.10

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Solution

The fourth proportional to 280,073,400.30, 420,110,100.45 and 252,332,180.10 is: 378,498,270.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,073,400.30 : 420,110,100.45 = 252,332,180.10 : x
  2. Step 2: Convert to fraction form
    280,073,400.30/420,110,100.45 = 252,332,180.10/x
  3. Step 3: Cross multiply
    280,073,400.30x = 420,110,100.45 × 252,332,180.10
  4. Step 4: Simplify right side
    280,073,400.30x = 106,007,297,528,578,480
  5. Step 5: Solve for x
    x = 106,007,297,528,578,480/280,073,400.30
  6. Step 6: Final answer
    x = 378,498,270.15

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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.