Home / 386,731,848.86-533,690,009.00-210,521,181.92

Finding the Fourth Proportional to 386,731,848.86, 533,690,009.00 and 210,521,181.92

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Solution

The fourth proportional to 386,731,848.86, 533,690,009.00 and 210,521,181.92 is: 290,519,262.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,731,848.86 : 533,690,009.00 = 210,521,181.92 : x
  2. Step 2: Convert to fraction form
    386,731,848.86/533,690,009.00 = 210,521,181.92/x
  3. Step 3: Cross multiply
    386,731,848.86x = 533,690,009.00 × 210,521,181.92
  4. Step 4: Simplify right side
    386,731,848.86x = 112,353,051,469,854,384
  5. Step 5: Solve for x
    x = 112,353,051,469,854,384/386,731,848.86
  6. Step 6: Final answer
    x = 290,519,262.38

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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.