Home / 387,903,601.20-535,318,307.82-211,702,905.03

Finding the Fourth Proportional to 387,903,601.20, 535,318,307.82 and 211,702,905.03

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Solution

The fourth proportional to 387,903,601.20, 535,318,307.82 and 211,702,905.03 is: 292,156,196.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,903,601.20 : 535,318,307.82 = 211,702,905.03 : x
  2. Step 2: Convert to fraction form
    387,903,601.20/535,318,307.82 = 211,702,905.03/x
  3. Step 3: Cross multiply
    387,903,601.20x = 535,318,307.82 × 211,702,905.03
  4. Step 4: Simplify right side
    387,903,601.20x = 113,328,440,881,237,760
  5. Step 5: Solve for x
    x = 113,328,440,881,237,760/387,903,601.20
  6. Step 6: Final answer
    x = 292,156,196.88

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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.