Home / 214,563,355.14-321,893,009.10-78,248,738.64

Finding the Fourth Proportional to 214,563,355.14, 321,893,009.10 and 78,248,738.64

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Solution

The fourth proportional to 214,563,355.14, 321,893,009.10 and 78,248,738.64 is: 117,390,604.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,563,355.14 : 321,893,009.10 = 78,248,738.64 : x
  2. Step 2: Convert to fraction form
    214,563,355.14/321,893,009.10 = 78,248,738.64/x
  3. Step 3: Cross multiply
    214,563,355.14x = 321,893,009.10 × 78,248,738.64
  4. Step 4: Simplify right side
    214,563,355.14x = 25,187,721,939,109,044
  5. Step 5: Solve for x
    x = 25,187,721,939,109,044/214,563,355.14
  6. Step 6: Final answer
    x = 117,390,604.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.