Home / 280,790,462.52-387,489,515.58-157,031,631.72

Finding the Fourth Proportional to 280,790,462.52, 387,489,515.58 and 157,031,631.72

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Solution

The fourth proportional to 280,790,462.52, 387,489,515.58 and 157,031,631.72 is: 216,702,912.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,790,462.52 : 387,489,515.58 = 157,031,631.72 : x
  2. Step 2: Convert to fraction form
    280,790,462.52/387,489,515.58 = 157,031,631.72/x
  3. Step 3: Cross multiply
    280,790,462.52x = 387,489,515.58 × 157,031,631.72
  4. Step 4: Simplify right side
    280,790,462.52x = 60,848,110,905,919,760
  5. Step 5: Solve for x
    x = 60,848,110,905,919,760/280,790,462.52
  6. Step 6: Final answer
    x = 216,702,912.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.