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Finding the Fourth Proportional to 315,269.28, 435,082.11 and 172,037.19

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Solution

The fourth proportional to 315,269.28, 435,082.11 and 172,037.19 is: 237,417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,269.28 : 435,082.11 = 172,037.19 : x
  2. Step 2: Convert to fraction form
    315,269.28/435,082.11 = 172,037.19/x
  3. Step 3: Cross multiply
    315,269.28x = 435,082.11 × 172,037.19
  4. Step 4: Simplify right side
    315,269.28x = 74,850,302,637.25
  5. Step 5: Solve for x
    x = 74,850,302,637.25/315,269.28
  6. Step 6: Final answer
    x = 237,417.05

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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.