Home / 287,101.96-430,674.94-87,439.32

Finding the Fourth Proportional to 287,101.96, 430,674.94 and 87,439.32

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Solution

The fourth proportional to 287,101.96, 430,674.94 and 87,439.32 is: 131,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,101.96 : 430,674.94 = 87,439.32 : x
  2. Step 2: Convert to fraction form
    287,101.96/430,674.94 = 87,439.32/x
  3. Step 3: Cross multiply
    287,101.96x = 430,674.94 × 87,439.32
  4. Step 4: Simplify right side
    287,101.96x = 37,657,923,894.64
  5. Step 5: Solve for x
    x = 37,657,923,894.64/287,101.96
  6. Step 6: Final answer
    x = 131,165.68

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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.