Home / 385,182,015.74-531,552,201.08-208,970,005.62

Finding the Fourth Proportional to 385,182,015.74, 531,552,201.08 and 208,970,005.62

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Solution

The fourth proportional to 385,182,015.74, 531,552,201.08 and 208,970,005.62 is: 288,379,160.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,182,015.74 : 531,552,201.08 = 208,970,005.62 : x
  2. Step 2: Convert to fraction form
    385,182,015.74/531,552,201.08 = 208,970,005.62/x
  3. Step 3: Cross multiply
    385,182,015.74x = 531,552,201.08 × 208,970,005.62
  4. Step 4: Simplify right side
    385,182,015.74x = 111,078,466,445,966,128
  5. Step 5: Solve for x
    x = 111,078,466,445,966,128/385,182,015.74
  6. Step 6: Final answer
    x = 288,379,160.78

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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.