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Finding the Fourth Proportional to 287,104.58, 430,492.77 and 87,365.90

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Solution

The fourth proportional to 287,104.58, 430,492.77 and 87,365.90 is: 130,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,104.58 : 430,492.77 = 87,365.90 : x
  2. Step 2: Convert to fraction form
    287,104.58/430,492.77 = 87,365.90/x
  3. Step 3: Cross multiply
    287,104.58x = 430,492.77 × 87,365.90
  4. Step 4: Simplify right side
    287,104.58x = 37,610,388,294.54
  5. Step 5: Solve for x
    x = 37,610,388,294.54/287,104.58
  6. Step 6: Final answer
    x = 130,998.91

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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.