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Finding the Fourth Proportional to 235,421.76, 325,015.92 and 155,082.72

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Solution

The fourth proportional to 235,421.76, 325,015.92 and 155,082.72 is: 214,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,421.76 : 325,015.92 = 155,082.72 : x
  2. Step 2: Convert to fraction form
    235,421.76/325,015.92 = 155,082.72/x
  3. Step 3: Cross multiply
    235,421.76x = 325,015.92 × 155,082.72
  4. Step 4: Simplify right side
    235,421.76x = 50,404,352,916.90
  5. Step 5: Solve for x
    x = 50,404,352,916.90/235,421.76
  6. Step 6: Final answer
    x = 214,102.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.