Home / 287,348,443.40-431,022,665.10-265,177,512.20

Finding the Fourth Proportional to 287,348,443.40, 431,022,665.10 and 265,177,512.20

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Solution

The fourth proportional to 287,348,443.40, 431,022,665.10 and 265,177,512.20 is: 397,766,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,348,443.40 : 431,022,665.10 = 265,177,512.20 : x
  2. Step 2: Convert to fraction form
    287,348,443.40/431,022,665.10 = 265,177,512.20/x
  3. Step 3: Cross multiply
    287,348,443.40x = 431,022,665.10 × 265,177,512.20
  4. Step 4: Simplify right side
    287,348,443.40x = 114,297,518,033,031,760
  5. Step 5: Solve for x
    x = 114,297,518,033,031,760/287,348,443.40
  6. Step 6: Final answer
    x = 397,766,268.30

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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.