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Finding the Fourth Proportional to 219,710.90, 329,547.15 and 71,966.90

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Solution

The fourth proportional to 219,710.90, 329,547.15 and 71,966.90 is: 107,944.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,710.90 : 329,547.15 = 71,966.90 : x
  2. Step 2: Convert to fraction form
    219,710.90/329,547.15 = 71,966.90/x
  3. Step 3: Cross multiply
    219,710.90x = 329,547.15 × 71,966.90
  4. Step 4: Simplify right side
    219,710.90x = 23,716,486,789.34
  5. Step 5: Solve for x
    x = 23,716,486,789.34/219,710.90
  6. Step 6: Final answer
    x = 107,944.06

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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.