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Finding the Fourth Proportional to 248,809,664.40, 372,940,781.40 and 87,168,397.20

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Solution

The fourth proportional to 248,809,664.40, 372,940,781.40 and 87,168,397.20 is: 130,656,701.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,809,664.40 : 372,940,781.40 = 87,168,397.20 : x
  2. Step 2: Convert to fraction form
    248,809,664.40/372,940,781.40 = 87,168,397.20/x
  3. Step 3: Cross multiply
    248,809,664.40x = 372,940,781.40 × 87,168,397.20
  4. Step 4: Simplify right side
    248,809,664.40x = 32,508,650,165,153,572
  5. Step 5: Solve for x
    x = 32,508,650,165,153,572/248,809,664.40
  6. Step 6: Final answer
    x = 130,656,701.96

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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.