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Finding the Fourth Proportional to 219,328.40, 329,004.29 and 69,580.66

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Solution

The fourth proportional to 219,328.40, 329,004.29 and 69,580.66 is: 104,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,328.40 : 329,004.29 = 69,580.66 : x
  2. Step 2: Convert to fraction form
    219,328.40/329,004.29 = 69,580.66/x
  3. Step 3: Cross multiply
    219,328.40x = 329,004.29 × 69,580.66
  4. Step 4: Simplify right side
    219,328.40x = 22,892,334,470.62
  5. Step 5: Solve for x
    x = 22,892,334,470.62/219,328.40
  6. Step 6: Final answer
    x = 104,374.70

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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.