Home / 426,072,307.20-639,108,460.80-153,407,644.80

Finding the Fourth Proportional to 426,072,307.20, 639,108,460.80 and 153,407,644.80

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Solution

The fourth proportional to 426,072,307.20, 639,108,460.80 and 153,407,644.80 is: 230,111,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,072,307.20 : 639,108,460.80 = 153,407,644.80 : x
  2. Step 2: Convert to fraction form
    426,072,307.20/639,108,460.80 = 153,407,644.80/x
  3. Step 3: Cross multiply
    426,072,307.20x = 639,108,460.80 × 153,407,644.80
  4. Step 4: Simplify right side
    426,072,307.20x = 98,044,123,743,081,120
  5. Step 5: Solve for x
    x = 98,044,123,743,081,120/426,072,307.20
  6. Step 6: Final answer
    x = 230,111,467.20

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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.