Home / 287,445,017.70-431,170,984.11-80,170,807.32

Finding the Fourth Proportional to 287,445,017.70, 431,170,984.11 and 80,170,807.32

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Solution

The fourth proportional to 287,445,017.70, 431,170,984.11 and 80,170,807.32 is: 120,257,175.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,445,017.70 : 431,170,984.11 = 80,170,807.32 : x
  2. Step 2: Convert to fraction form
    287,445,017.70/431,170,984.11 = 80,170,807.32/x
  3. Step 3: Cross multiply
    287,445,017.70x = 431,170,984.11 × 80,170,807.32
  4. Step 4: Simplify right side
    287,445,017.70x = 34,567,325,889,057,588
  5. Step 5: Solve for x
    x = 34,567,325,889,057,588/287,445,017.70
  6. Step 6: Final answer
    x = 120,257,175.32

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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.