Home / 287,230.20-430,909.26-87,566.12

Finding the Fourth Proportional to 287,230.20, 430,909.26 and 87,566.12

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Solution

The fourth proportional to 287,230.20, 430,909.26 and 87,566.12 is: 131,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,230.20 : 430,909.26 = 87,566.12 : x
  2. Step 2: Convert to fraction form
    287,230.20/430,909.26 = 87,566.12/x
  3. Step 3: Cross multiply
    287,230.20x = 430,909.26 × 87,566.12
  4. Step 4: Simplify right side
    287,230.20x = 37,733,051,970.27
  5. Step 5: Solve for x
    x = 37,733,051,970.27/287,230.20
  6. Step 6: Final answer
    x = 131,368.68

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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.