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Finding the Fourth Proportional to 315,790.89, 436,082.46 and 202,810.47

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Solution

The fourth proportional to 315,790.89, 436,082.46 and 202,810.47 is: 280,065.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,790.89 : 436,082.46 = 202,810.47 : x
  2. Step 2: Convert to fraction form
    315,790.89/436,082.46 = 202,810.47/x
  3. Step 3: Cross multiply
    315,790.89x = 436,082.46 × 202,810.47
  4. Step 4: Simplify right side
    315,790.89x = 88,442,088,671.36
  5. Step 5: Solve for x
    x = 88,442,088,671.36/315,790.89
  6. Step 6: Final answer
    x = 280,065.36

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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.