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Finding the Fourth Proportional to 354,064.15, 531,148.99 and 126,342.01

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Solution

The fourth proportional to 354,064.15, 531,148.99 and 126,342.01 is: 189,531.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,064.15 : 531,148.99 = 126,342.01 : x
  2. Step 2: Convert to fraction form
    354,064.15/531,148.99 = 126,342.01/x
  3. Step 3: Cross multiply
    354,064.15x = 531,148.99 × 126,342.01
  4. Step 4: Simplify right side
    354,064.15x = 67,106,431,058.04
  5. Step 5: Solve for x
    x = 67,106,431,058.04/354,064.15
  6. Step 6: Final answer
    x = 189,531.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.