Home / 287,348,508.40-431,022,762.60-265,177,577.20

Finding the Fourth Proportional to 287,348,508.40, 431,022,762.60 and 265,177,577.20

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Solution

The fourth proportional to 287,348,508.40, 431,022,762.60 and 265,177,577.20 is: 397,766,365.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,348,508.40 : 431,022,762.60 = 265,177,577.20 : x
  2. Step 2: Convert to fraction form
    287,348,508.40/431,022,762.60 = 265,177,577.20/x
  3. Step 3: Cross multiply
    287,348,508.40x = 431,022,762.60 × 265,177,577.20
  4. Step 4: Simplify right side
    287,348,508.40x = 114,297,571,904,318,768
  5. Step 5: Solve for x
    x = 114,297,571,904,318,768/287,348,508.40
  6. Step 6: Final answer
    x = 397,766,365.80

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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.