Home / 280,410,868.99-420,240,320.16-218,237,254.30

Finding the Fourth Proportional to 280,410,868.99, 420,240,320.16 and 218,237,254.30

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Solution

The fourth proportional to 280,410,868.99, 420,240,320.16 and 218,237,254.30 is: 327,063,262.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,410,868.99 : 420,240,320.16 = 218,237,254.30 : x
  2. Step 2: Convert to fraction form
    280,410,868.99/420,240,320.16 = 218,237,254.30/x
  3. Step 3: Cross multiply
    280,410,868.99x = 420,240,320.16 × 218,237,254.30
  4. Step 4: Simplify right side
    280,410,868.99x = 91,712,093,617,871,344
  5. Step 5: Solve for x
    x = 91,712,093,617,871,344/280,410,868.99
  6. Step 6: Final answer
    x = 327,063,262.38

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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.