Home / 287,864,256.30-431,796,384.45-165,420,249.90

Finding the Fourth Proportional to 287,864,256.30, 431,796,384.45 and 165,420,249.90

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Solution

The fourth proportional to 287,864,256.30, 431,796,384.45 and 165,420,249.90 is: 248,130,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,256.30 : 431,796,384.45 = 165,420,249.90 : x
  2. Step 2: Convert to fraction form
    287,864,256.30/431,796,384.45 = 165,420,249.90/x
  3. Step 3: Cross multiply
    287,864,256.30x = 431,796,384.45 × 165,420,249.90
  4. Step 4: Simplify right side
    287,864,256.30x = 71,427,865,821,635,472
  5. Step 5: Solve for x
    x = 71,427,865,821,635,472/287,864,256.30
  6. Step 6: Final answer
    x = 248,130,374.85

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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.