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Finding the Fourth Proportional to 399,392.37, 598,931.82 and 162,649.62

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Solution

The fourth proportional to 399,392.37, 598,931.82 and 162,649.62 is: 243,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,392.37 : 598,931.82 = 162,649.62 : x
  2. Step 2: Convert to fraction form
    399,392.37/598,931.82 = 162,649.62/x
  3. Step 3: Cross multiply
    399,392.37x = 598,931.82 × 162,649.62
  4. Step 4: Simplify right side
    399,392.37x = 97,416,032,928.91
  5. Step 5: Solve for x
    x = 97,416,032,928.91/399,392.37
  6. Step 6: Final answer
    x = 243,910.60

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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.