Home / 287,789,406.10-431,684,109.15-200,113,450.90

Finding the Fourth Proportional to 287,789,406.10, 431,684,109.15 and 200,113,450.90

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Solution

The fourth proportional to 287,789,406.10, 431,684,109.15 and 200,113,450.90 is: 300,170,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,789,406.10 : 431,684,109.15 = 200,113,450.90 : x
  2. Step 2: Convert to fraction form
    287,789,406.10/431,684,109.15 = 200,113,450.90/x
  3. Step 3: Cross multiply
    287,789,406.10x = 431,684,109.15 × 200,113,450.90
  4. Step 4: Simplify right side
    287,789,406.10x = 86,385,796,780,698,768
  5. Step 5: Solve for x
    x = 86,385,796,780,698,768/287,789,406.10
  6. Step 6: Final answer
    x = 300,170,176.35

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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.