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Finding the Fourth Proportional to 499,915.43, 749,985.70 and 158,379.45

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Solution

The fourth proportional to 499,915.43, 749,985.70 and 158,379.45 is: 237,604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,915.43 : 749,985.70 = 158,379.45 : x
  2. Step 2: Convert to fraction form
    499,915.43/749,985.70 = 158,379.45/x
  3. Step 3: Cross multiply
    499,915.43x = 749,985.70 × 158,379.45
  4. Step 4: Simplify right side
    499,915.43x = 118,782,325,090.36
  5. Step 5: Solve for x
    x = 118,782,325,090.36/499,915.43
  6. Step 6: Final answer
    x = 237,604.84

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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.