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Finding the Fourth Proportional to 420,295.32, 580,007.54 and 269,392.32

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Solution

The fourth proportional to 420,295.32, 580,007.54 and 269,392.32 is: 371,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,295.32 : 580,007.54 = 269,392.32 : x
  2. Step 2: Convert to fraction form
    420,295.32/580,007.54 = 269,392.32/x
  3. Step 3: Cross multiply
    420,295.32x = 580,007.54 × 269,392.32
  4. Step 4: Simplify right side
    420,295.32x = 156,249,575,471.13
  5. Step 5: Solve for x
    x = 156,249,575,471.13/420,295.32
  6. Step 6: Final answer
    x = 371,761.40

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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.