Home / 287,242.40-430,928.21-87,582.97

Finding the Fourth Proportional to 287,242.40, 430,928.21 and 87,582.97

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Solution

The fourth proportional to 287,242.40, 430,928.21 and 87,582.97 is: 131,394.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,242.40 : 430,928.21 = 87,582.97 : x
  2. Step 2: Convert to fraction form
    287,242.40/430,928.21 = 87,582.97/x
  3. Step 3: Cross multiply
    287,242.40x = 430,928.21 × 87,582.97
  4. Step 4: Simplify right side
    287,242.40x = 37,741,971,411.26
  5. Step 5: Solve for x
    x = 37,741,971,411.26/287,242.40
  6. Step 6: Final answer
    x = 131,394.15

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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.