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Finding the Fourth Proportional to 212,879.76, 293,768.28 and 117,384.72

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Solution

The fourth proportional to 212,879.76, 293,768.28 and 117,384.72 is: 161,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,879.76 : 293,768.28 = 117,384.72 : x
  2. Step 2: Convert to fraction form
    212,879.76/293,768.28 = 117,384.72/x
  3. Step 3: Cross multiply
    212,879.76x = 293,768.28 × 117,384.72
  4. Step 4: Simplify right side
    212,879.76x = 34,483,907,292.68
  5. Step 5: Solve for x
    x = 34,483,907,292.68/212,879.76
  6. Step 6: Final answer
    x = 161,987.72

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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.