Home / 387,905,093.12-535,320,377.28-211,704,389.76

Finding the Fourth Proportional to 387,905,093.12, 535,320,377.28 and 211,704,389.76

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Solution

The fourth proportional to 387,905,093.12, 535,320,377.28 and 211,704,389.76 is: 292,158,251.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,905,093.12 : 535,320,377.28 = 211,704,389.76 : x
  2. Step 2: Convert to fraction form
    387,905,093.12/535,320,377.28 = 211,704,389.76/x
  3. Step 3: Cross multiply
    387,905,093.12x = 535,320,377.28 × 211,704,389.76
  4. Step 4: Simplify right side
    387,905,093.12x = 113,329,673,798,155,360
  5. Step 5: Solve for x
    x = 113,329,673,798,155,360/387,905,093.12
  6. Step 6: Final answer
    x = 292,158,251.61

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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.