Home / 258,061,721.60-387,092,582.40-256,270,131.20

Finding the Fourth Proportional to 258,061,721.60, 387,092,582.40 and 256,270,131.20

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Solution

The fourth proportional to 258,061,721.60, 387,092,582.40 and 256,270,131.20 is: 384,405,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,061,721.60 : 387,092,582.40 = 256,270,131.20 : x
  2. Step 2: Convert to fraction form
    258,061,721.60/387,092,582.40 = 256,270,131.20/x
  3. Step 3: Cross multiply
    258,061,721.60x = 387,092,582.40 × 256,270,131.20
  4. Step 4: Simplify right side
    258,061,721.60x = 99,200,266,878,194,800
  5. Step 5: Solve for x
    x = 99,200,266,878,194,800/258,061,721.60
  6. Step 6: Final answer
    x = 384,405,196.80

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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.