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Finding the Fourth Proportional to 219,422.45, 302,801.25 and 118,820.45

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Solution

The fourth proportional to 219,422.45, 302,801.25 and 118,820.45 is: 163,971.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,422.45 : 302,801.25 = 118,820.45 : x
  2. Step 2: Convert to fraction form
    219,422.45/302,801.25 = 118,820.45/x
  3. Step 3: Cross multiply
    219,422.45x = 302,801.25 × 118,820.45
  4. Step 4: Simplify right side
    219,422.45x = 35,978,980,785.56
  5. Step 5: Solve for x
    x = 35,978,980,785.56/219,422.45
  6. Step 6: Final answer
    x = 163,971.28

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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.