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Finding the Fourth Proportional to 434,960.80, 651,404.40 and 266,999.20

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Solution

The fourth proportional to 434,960.80, 651,404.40 and 266,999.20 is: 399,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,960.80 : 651,404.40 = 266,999.20 : x
  2. Step 2: Convert to fraction form
    434,960.80/651,404.40 = 266,999.20/x
  3. Step 3: Cross multiply
    434,960.80x = 651,404.40 × 266,999.20
  4. Step 4: Simplify right side
    434,960.80x = 173,924,453,676.48
  5. Step 5: Solve for x
    x = 173,924,453,676.48/434,960.80
  6. Step 6: Final answer
    x = 399,862.36

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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.