Home / 280,314,440.10-420,471,660.15-165,428,705.70

Finding the Fourth Proportional to 280,314,440.10, 420,471,660.15 and 165,428,705.70

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Solution

The fourth proportional to 280,314,440.10, 420,471,660.15 and 165,428,705.70 is: 248,143,058.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,314,440.10 : 420,471,660.15 = 165,428,705.70 : x
  2. Step 2: Convert to fraction form
    280,314,440.10/420,471,660.15 = 165,428,705.70/x
  3. Step 3: Cross multiply
    280,314,440.10x = 420,471,660.15 × 165,428,705.70
  4. Step 4: Simplify right side
    280,314,440.10x = 69,558,082,522,144,760
  5. Step 5: Solve for x
    x = 69,558,082,522,144,760/280,314,440.10
  6. Step 6: Final answer
    x = 248,143,058.55

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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.