Home / 287,890.97-430,950.65-187,835.72

Finding the Fourth Proportional to 287,890.97, 430,950.65 and 187,835.72

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Solution

The fourth proportional to 287,890.97, 430,950.65 and 187,835.72 is: 281,175.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,890.97 : 430,950.65 = 187,835.72 : x
  2. Step 2: Convert to fraction form
    287,890.97/430,950.65 = 187,835.72/x
  3. Step 3: Cross multiply
    287,890.97x = 430,950.65 × 187,835.72
  4. Step 4: Simplify right side
    287,890.97x = 80,947,922,533.29
  5. Step 5: Solve for x
    x = 80,947,922,533.29/287,890.97
  6. Step 6: Final answer
    x = 281,175.63

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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.