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Finding the Fourth Proportional to 426,393.56, 588,421.48 and 235,405.58

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Solution

The fourth proportional to 426,393.56, 588,421.48 and 235,405.58 is: 324,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,393.56 : 588,421.48 = 235,405.58 : x
  2. Step 2: Convert to fraction form
    426,393.56/588,421.48 = 235,405.58/x
  3. Step 3: Cross multiply
    426,393.56x = 588,421.48 × 235,405.58
  4. Step 4: Simplify right side
    426,393.56x = 138,517,699,783.86
  5. Step 5: Solve for x
    x = 138,517,699,783.86/426,393.56
  6. Step 6: Final answer
    x = 324,858.80

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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.