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Finding the Fourth Proportional to 393,594.68, 543,465.82 and 307,403.22

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Solution

The fourth proportional to 393,594.68, 543,465.82 and 307,403.22 is: 424,454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,594.68 : 543,465.82 = 307,403.22 : x
  2. Step 2: Convert to fraction form
    393,594.68/543,465.82 = 307,403.22/x
  3. Step 3: Cross multiply
    393,594.68x = 543,465.82 × 307,403.22
  4. Step 4: Simplify right side
    393,594.68x = 167,063,143,027.94
  5. Step 5: Solve for x
    x = 167,063,143,027.94/393,594.68
  6. Step 6: Final answer
    x = 424,454.78

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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.