Home / 280,409,876.10-420,238,837.98-218,236,264.38

Finding the Fourth Proportional to 280,409,876.10, 420,238,837.98 and 218,236,264.38

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Solution

The fourth proportional to 280,409,876.10, 420,238,837.98 and 218,236,264.38 is: 327,061,783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,409,876.10 : 420,238,837.98 = 218,236,264.38 : x
  2. Step 2: Convert to fraction form
    280,409,876.10/420,238,837.98 = 218,236,264.38/x
  3. Step 3: Cross multiply
    280,409,876.10x = 420,238,837.98 × 218,236,264.38
  4. Step 4: Simplify right side
    280,409,876.10x = 91,711,354,148,147,264
  5. Step 5: Solve for x
    x = 91,711,354,148,147,264/280,409,876.10
  6. Step 6: Final answer
    x = 327,061,783.36

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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.