Home / 387,545,890.72-534,826,244-211,343,529.28

Finding the Fourth Proportional to 387,545,890.72, 534,826,244 and 211,343,529.28

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Solution

The fourth proportional to 387,545,890.72, 534,826,244 and 211,343,529.28 is: 291,661,113.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,545,890.72 : 534,826,244 = 211,343,529.28 : x
  2. Step 2: Convert to fraction form
    387,545,890.72/534,826,244 = 211,343,529.28/x
  3. Step 3: Cross multiply
    387,545,890.72x = 534,826,244 × 211,343,529.28
  4. Step 4: Simplify right side
    387,545,890.72x = 113,032,065,958,526,432
  5. Step 5: Solve for x
    x = 113,032,065,958,526,432/387,545,890.72
  6. Step 6: Final answer
    x = 291,661,113.34

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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.