Home / 287,230.59-430,845.21-76,868.55

Finding the Fourth Proportional to 287,230.59, 430,845.21 and 76,868.55

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Solution

The fourth proportional to 287,230.59, 430,845.21 and 76,868.55 is: 115,302.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,230.59 : 430,845.21 = 76,868.55 : x
  2. Step 2: Convert to fraction form
    287,230.59/430,845.21 = 76,868.55/x
  3. Step 3: Cross multiply
    287,230.59x = 430,845.21 × 76,868.55
  4. Step 4: Simplify right side
    287,230.59x = 33,118,446,567.15
  5. Step 5: Solve for x
    x = 33,118,446,567.15/287,230.59
  6. Step 6: Final answer
    x = 115,302.64

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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.