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Finding the Fourth Proportional to 228,386.60, 315,165.46 and 126,412.26

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Solution

The fourth proportional to 228,386.60, 315,165.46 and 126,412.26 is: 174,444.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,386.60 : 315,165.46 = 126,412.26 : x
  2. Step 2: Convert to fraction form
    228,386.60/315,165.46 = 126,412.26/x
  3. Step 3: Cross multiply
    228,386.60x = 315,165.46 × 126,412.26
  4. Step 4: Simplify right side
    228,386.60x = 39,840,775,864.65
  5. Step 5: Solve for x
    x = 39,840,775,864.65/228,386.60
  6. Step 6: Final answer
    x = 174,444.46

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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.