Home / 280,409,875.10-420,238,836.48-218,236,263.38

Finding the Fourth Proportional to 280,409,875.10, 420,238,836.48 and 218,236,263.38

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Solution

The fourth proportional to 280,409,875.10, 420,238,836.48 and 218,236,263.38 is: 327,061,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,409,875.10 : 420,238,836.48 = 218,236,263.38 : x
  2. Step 2: Convert to fraction form
    280,409,875.10/420,238,836.48 = 218,236,263.38/x
  3. Step 3: Cross multiply
    280,409,875.10x = 420,238,836.48 × 218,236,263.38
  4. Step 4: Simplify right side
    280,409,875.10x = 91,711,353,400,554,032
  5. Step 5: Solve for x
    x = 91,711,353,400,554,032/280,409,875.10
  6. Step 6: Final answer
    x = 327,061,781.86

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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.