Home / 280,621,757.48-420,935,957.72-169,981,554.14

Finding the Fourth Proportional to 280,621,757.48, 420,935,957.72 and 169,981,554.14

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Solution

The fourth proportional to 280,621,757.48, 420,935,957.72 and 169,981,554.14 is: 254,974,343.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,621,757.48 : 420,935,957.72 = 169,981,554.14 : x
  2. Step 2: Convert to fraction form
    280,621,757.48/420,935,957.72 = 169,981,554.14/x
  3. Step 3: Cross multiply
    280,621,757.48x = 420,935,957.72 × 169,981,554.14
  4. Step 4: Simplify right side
    280,621,757.48x = 71,551,348,285,916,280
  5. Step 5: Solve for x
    x = 71,551,348,285,916,280/280,621,757.48
  6. Step 6: Final answer
    x = 254,974,343.15

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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.