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Finding the Fourth Proportional to 228,809.48, 315,744.18 and 133,331.72

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Solution

The fourth proportional to 228,809.48, 315,744.18 and 133,331.72 is: 183,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,809.48 : 315,744.18 = 133,331.72 : x
  2. Step 2: Convert to fraction form
    228,809.48/315,744.18 = 133,331.72/x
  3. Step 3: Cross multiply
    228,809.48x = 315,744.18 × 133,331.72
  4. Step 4: Simplify right side
    228,809.48x = 42,098,714,599.39
  5. Step 5: Solve for x
    x = 42,098,714,599.39/228,809.48
  6. Step 6: Final answer
    x = 183,990.26

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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.