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Finding the Fourth Proportional to 287,603,359.65, 431,405,039.48 and 239,773,669.65

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Solution

The fourth proportional to 287,603,359.65, 431,405,039.48 and 239,773,669.65 is: 359,660,504.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,603,359.65 : 431,405,039.48 = 239,773,669.65 : x
  2. Step 2: Convert to fraction form
    287,603,359.65/431,405,039.48 = 239,773,669.65/x
  3. Step 3: Cross multiply
    287,603,359.65x = 431,405,039.48 × 239,773,669.65
  4. Step 4: Simplify right side
    287,603,359.65x = 103,439,569,420,423,872
  5. Step 5: Solve for x
    x = 103,439,569,420,423,872/287,603,359.65
  6. Step 6: Final answer
    x = 359,660,504.48

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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.