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Finding the Fourth Proportional to 219,689.76, 329,416.07 and 99,681.22

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Solution

The fourth proportional to 219,689.76, 329,416.07 and 99,681.22 is: 149,468.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,689.76 : 329,416.07 = 99,681.22 : x
  2. Step 2: Convert to fraction form
    219,689.76/329,416.07 = 99,681.22/x
  3. Step 3: Cross multiply
    219,689.76x = 329,416.07 × 99,681.22
  4. Step 4: Simplify right side
    219,689.76x = 32,836,594,672.46
  5. Step 5: Solve for x
    x = 32,836,594,672.46/219,689.76
  6. Step 6: Final answer
    x = 149,468.03

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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.