Home / 287,942,496.23-397,635,078.85-272,255,572.72

Finding the Fourth Proportional to 287,942,496.23, 397,635,078.85 and 272,255,572.72

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Solution

The fourth proportional to 287,942,496.23, 397,635,078.85 and 272,255,572.72 is: 375,972,173.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,942,496.23 : 397,635,078.85 = 272,255,572.72 : x
  2. Step 2: Convert to fraction form
    287,942,496.23/397,635,078.85 = 272,255,572.72/x
  3. Step 3: Cross multiply
    287,942,496.23x = 397,635,078.85 × 272,255,572.72
  4. Step 4: Simplify right side
    287,942,496.23x = 108,258,366,125,869,120
  5. Step 5: Solve for x
    x = 108,258,366,125,869,120/287,942,496.23
  6. Step 6: Final answer
    x = 375,972,173.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.