Home / 287,475,347.70-431,213,021.55-205,846,010.10

Finding the Fourth Proportional to 287,475,347.70, 431,213,021.55 and 205,846,010.10

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Solution

The fourth proportional to 287,475,347.70, 431,213,021.55 and 205,846,010.10 is: 308,769,015.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,475,347.70 : 431,213,021.55 = 205,846,010.10 : x
  2. Step 2: Convert to fraction form
    287,475,347.70/431,213,021.55 = 205,846,010.10/x
  3. Step 3: Cross multiply
    287,475,347.70x = 431,213,021.55 × 205,846,010.10
  4. Step 4: Simplify right side
    287,475,347.70x = 88,763,479,989,232,816
  5. Step 5: Solve for x
    x = 88,763,479,989,232,816/287,475,347.70
  6. Step 6: Final answer
    x = 308,769,015.15

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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.