Home / 265,769,881.20-398,654,821.80-210,287,440.80

Finding the Fourth Proportional to 265,769,881.20, 398,654,821.80 and 210,287,440.80

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Solution

The fourth proportional to 265,769,881.20, 398,654,821.80 and 210,287,440.80 is: 315,431,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,769,881.20 : 398,654,821.80 = 210,287,440.80 : x
  2. Step 2: Convert to fraction form
    265,769,881.20/398,654,821.80 = 210,287,440.80/x
  3. Step 3: Cross multiply
    265,769,881.20x = 398,654,821.80 × 210,287,440.80
  4. Step 4: Simplify right side
    265,769,881.20x = 83,832,102,238,902,064
  5. Step 5: Solve for x
    x = 83,832,102,238,902,064/265,769,881.20
  6. Step 6: Final answer
    x = 315,431,161.20

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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.