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Finding the Fourth Proportional to 220,007.40, 329,946.30 and 86,843.40

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Solution

The fourth proportional to 220,007.40, 329,946.30 and 86,843.40 is: 130,239.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,007.40 : 329,946.30 = 86,843.40 : x
  2. Step 2: Convert to fraction form
    220,007.40/329,946.30 = 86,843.40/x
  3. Step 3: Cross multiply
    220,007.40x = 329,946.30 × 86,843.40
  4. Step 4: Simplify right side
    220,007.40x = 28,653,658,509.42
  5. Step 5: Solve for x
    x = 28,653,658,509.42/220,007.40
  6. Step 6: Final answer
    x = 130,239.52

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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.