Home / 280,314,318.60-420,471,477.90-165,428,584.20

Finding the Fourth Proportional to 280,314,318.60, 420,471,477.90 and 165,428,584.20

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Solution

The fourth proportional to 280,314,318.60, 420,471,477.90 and 165,428,584.20 is: 248,142,876.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,314,318.60 : 420,471,477.90 = 165,428,584.20 : x
  2. Step 2: Convert to fraction form
    280,314,318.60/420,471,477.90 = 165,428,584.20/x
  3. Step 3: Cross multiply
    280,314,318.60x = 420,471,477.90 × 165,428,584.20
  4. Step 4: Simplify right side
    280,314,318.60x = 69,558,001,285,478,584
  5. Step 5: Solve for x
    x = 69,558,001,285,478,584/280,314,318.60
  6. Step 6: Final answer
    x = 248,142,876.30

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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.