Home / 387,903,628.20-535,318,345.08-211,702,932.12

Finding the Fourth Proportional to 387,903,628.20, 535,318,345.08 and 211,702,932.12

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Solution

The fourth proportional to 387,903,628.20, 535,318,345.08 and 211,702,932.12 is: 292,156,234.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,903,628.20 : 535,318,345.08 = 211,702,932.12 : x
  2. Step 2: Convert to fraction form
    387,903,628.20/535,318,345.08 = 211,702,932.12/x
  3. Step 3: Cross multiply
    387,903,628.20x = 535,318,345.08 × 211,702,932.12
  4. Step 4: Simplify right side
    387,903,628.20x = 113,328,463,271,061,968
  5. Step 5: Solve for x
    x = 113,328,463,271,061,968/387,903,628.20
  6. Step 6: Final answer
    x = 292,156,234.26

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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.