Home / 387,903,599.89-535,318,306.01-211,702,903.72

Finding the Fourth Proportional to 387,903,599.89, 535,318,306.01 and 211,702,903.72

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Solution

The fourth proportional to 387,903,599.89, 535,318,306.01 and 211,702,903.72 is: 292,156,195.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,903,599.89 : 535,318,306.01 = 211,702,903.72 : x
  2. Step 2: Convert to fraction form
    387,903,599.89/535,318,306.01 = 211,702,903.72/x
  3. Step 3: Cross multiply
    387,903,599.89x = 535,318,306.01 × 211,702,903.72
  4. Step 4: Simplify right side
    387,903,599.89x = 113,328,439,795,185,616
  5. Step 5: Solve for x
    x = 113,328,439,795,185,616/387,903,599.89
  6. Step 6: Final answer
    x = 292,156,195.07

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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.