Home / 228,631.47-315,665.40-142,721.25

Finding the Fourth Proportional to 228,631.47, 315,665.40 and 142,721.25

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Solution

The fourth proportional to 228,631.47, 315,665.40 and 142,721.25 is: 197,051.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,631.47 : 315,665.40 = 142,721.25 : x
  2. Step 2: Convert to fraction form
    228,631.47/315,665.40 = 142,721.25/x
  3. Step 3: Cross multiply
    228,631.47x = 315,665.40 × 142,721.25
  4. Step 4: Simplify right side
    228,631.47x = 45,052,160,469.75
  5. Step 5: Solve for x
    x = 45,052,160,469.75/228,631.47
  6. Step 6: Final answer
    x = 197,051.44

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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.