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Finding the Fourth Proportional to 439,698.52, 659,573.30 and 124,129

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Solution

The fourth proportional to 439,698.52, 659,573.30 and 124,129 is: 186,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,698.52 : 659,573.30 = 124,129 : x
  2. Step 2: Convert to fraction form
    439,698.52/659,573.30 = 124,129/x
  3. Step 3: Cross multiply
    439,698.52x = 659,573.30 × 124,129
  4. Step 4: Simplify right side
    439,698.52x = 81,872,173,535.06
  5. Step 5: Solve for x
    x = 81,872,173,535.06/439,698.52
  6. Step 6: Final answer
    x = 186,200.70

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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.