Home / 378,897,547.57-522,873,096.40-211,636,188.85

Finding the Fourth Proportional to 378,897,547.57, 522,873,096.40 and 211,636,188.85

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Solution

The fourth proportional to 378,897,547.57, 522,873,096.40 and 211,636,188.85 is: 292,054,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,897,547.57 : 522,873,096.40 = 211,636,188.85 : x
  2. Step 2: Convert to fraction form
    378,897,547.57/522,873,096.40 = 211,636,188.85/x
  3. Step 3: Cross multiply
    378,897,547.57x = 522,873,096.40 × 211,636,188.85
  4. Step 4: Simplify right side
    378,897,547.57x = 110,658,869,374,294,640
  5. Step 5: Solve for x
    x = 110,658,869,374,294,640/378,897,547.57
  6. Step 6: Final answer
    x = 292,054,857.79

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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.