Home / 426,072,810.20-639,109,215.30-153,408,147.80

Finding the Fourth Proportional to 426,072,810.20, 639,109,215.30 and 153,408,147.80

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Solution

The fourth proportional to 426,072,810.20, 639,109,215.30 and 153,408,147.80 is: 230,112,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,072,810.20 : 639,109,215.30 = 153,408,147.80 : x
  2. Step 2: Convert to fraction form
    426,072,810.20/639,109,215.30 = 153,408,147.80/x
  3. Step 3: Cross multiply
    426,072,810.20x = 639,109,215.30 × 153,408,147.80
  4. Step 4: Simplify right side
    426,072,810.20x = 98,044,560,961,084,416
  5. Step 5: Solve for x
    x = 98,044,560,961,084,416/426,072,810.20
  6. Step 6: Final answer
    x = 230,112,221.70

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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.