Home / 287,683.38-431,225.68-161,138.10

Finding the Fourth Proportional to 287,683.38, 431,225.68 and 161,138.10

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Solution

The fourth proportional to 287,683.38, 431,225.68 and 161,138.10 is: 241,539.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,683.38 : 431,225.68 = 161,138.10 : x
  2. Step 2: Convert to fraction form
    287,683.38/431,225.68 = 161,138.10/x
  3. Step 3: Cross multiply
    287,683.38x = 431,225.68 × 161,138.10
  4. Step 4: Simplify right side
    287,683.38x = 69,486,886,746.41
  5. Step 5: Solve for x
    x = 69,486,886,746.41/287,683.38
  6. Step 6: Final answer
    x = 241,539.45

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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.