Home / 387,903,614.96-535,318,326.80-211,702,918.78

Finding the Fourth Proportional to 387,903,614.96, 535,318,326.80 and 211,702,918.78

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Solution

The fourth proportional to 387,903,614.96, 535,318,326.80 and 211,702,918.78 is: 292,156,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,903,614.96 : 535,318,326.80 = 211,702,918.78 : x
  2. Step 2: Convert to fraction form
    387,903,614.96/535,318,326.80 = 211,702,918.78/x
  3. Step 3: Cross multiply
    387,903,614.96x = 535,318,326.80 × 211,702,918.78
  4. Step 4: Simplify right side
    387,903,614.96x = 113,328,452,259,985,904
  5. Step 5: Solve for x
    x = 113,328,452,259,985,904/387,903,614.96
  6. Step 6: Final answer
    x = 292,156,215.85

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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.