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Finding the Fourth Proportional to 342,039.72, 513,068.40 and 162,082.92

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Solution

The fourth proportional to 342,039.72, 513,068.40 and 162,082.92 is: 243,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,039.72 : 513,068.40 = 162,082.92 : x
  2. Step 2: Convert to fraction form
    342,039.72/513,068.40 = 162,082.92/x
  3. Step 3: Cross multiply
    342,039.72x = 513,068.40 × 162,082.92
  4. Step 4: Simplify right side
    342,039.72x = 83,159,624,431.73
  5. Step 5: Solve for x
    x = 83,159,624,431.73/342,039.72
  6. Step 6: Final answer
    x = 243,128.56

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1.5x scale

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.