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Finding the Fourth Proportional to 426,168.93, 588,334.22 and 311,318.63

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Solution

The fourth proportional to 426,168.93, 588,334.22 and 311,318.63 is: 429,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,168.93 : 588,334.22 = 311,318.63 : x
  2. Step 2: Convert to fraction form
    426,168.93/588,334.22 = 311,318.63/x
  3. Step 3: Cross multiply
    426,168.93x = 588,334.22 × 311,318.63
  4. Step 4: Simplify right side
    426,168.93x = 183,159,398,854.25
  5. Step 5: Solve for x
    x = 183,159,398,854.25/426,168.93
  6. Step 6: Final answer
    x = 429,781.21

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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.