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Finding the Fourth Proportional to 219,607.80, 329,411.70 and 130,815.60

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Solution

The fourth proportional to 219,607.80, 329,411.70 and 130,815.60 is: 196,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,607.80 : 329,411.70 = 130,815.60 : x
  2. Step 2: Convert to fraction form
    219,607.80/329,411.70 = 130,815.60/x
  3. Step 3: Cross multiply
    219,607.80x = 329,411.70 × 130,815.60
  4. Step 4: Simplify right side
    219,607.80x = 43,092,189,182.52
  5. Step 5: Solve for x
    x = 43,092,189,182.52/219,607.80
  6. Step 6: Final answer
    x = 196,223.40

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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.