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Finding the Fourth Proportional to 219,062.40, 328,739.40 and 124,292.40

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Solution

The fourth proportional to 219,062.40, 328,739.40 and 124,292.40 is: 186,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,062.40 : 328,739.40 = 124,292.40 : x
  2. Step 2: Convert to fraction form
    219,062.40/328,739.40 = 124,292.40/x
  3. Step 3: Cross multiply
    219,062.40x = 328,739.40 × 124,292.40
  4. Step 4: Simplify right side
    219,062.40x = 40,859,809,000.56
  5. Step 5: Solve for x
    x = 40,859,809,000.56/219,062.40
  6. Step 6: Final answer
    x = 186,521.32

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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.