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Finding the Fourth Proportional to 219,415.86, 329,090.18 and 69,636.74

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Solution

The fourth proportional to 219,415.86, 329,090.18 and 69,636.74 is: 104,444.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,415.86 : 329,090.18 = 69,636.74 : x
  2. Step 2: Convert to fraction form
    219,415.86/329,090.18 = 69,636.74/x
  3. Step 3: Cross multiply
    219,415.86x = 329,090.18 × 69,636.74
  4. Step 4: Simplify right side
    219,415.86x = 22,916,765,307.58
  5. Step 5: Solve for x
    x = 22,916,765,307.58/219,415.86
  6. Step 6: Final answer
    x = 104,444.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.