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Finding the Fourth Proportional to 399,925.76, 598,653.12 and 219,560

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Solution

The fourth proportional to 399,925.76, 598,653.12 and 219,560 is: 328,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,925.76 : 598,653.12 = 219,560 : x
  2. Step 2: Convert to fraction form
    399,925.76/598,653.12 = 219,560/x
  3. Step 3: Cross multiply
    399,925.76x = 598,653.12 × 219,560
  4. Step 4: Simplify right side
    399,925.76x = 131,440,279,027.20
  5. Step 5: Solve for x
    x = 131,440,279,027.20/399,925.76
  6. Step 6: Final answer
    x = 328,661.70

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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.