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Finding the Fourth Proportional to 384,790.98, 531,010.71 and 215,025.12

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Solution

The fourth proportional to 384,790.98, 531,010.71 and 215,025.12 is: 296,734.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,790.98 : 531,010.71 = 215,025.12 : x
  2. Step 2: Convert to fraction form
    384,790.98/531,010.71 = 215,025.12/x
  3. Step 3: Cross multiply
    384,790.98x = 531,010.71 × 215,025.12
  4. Step 4: Simplify right side
    384,790.98x = 114,180,641,639.04
  5. Step 5: Solve for x
    x = 114,180,641,639.04/384,790.98
  6. Step 6: Final answer
    x = 296,734.19

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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.