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Finding the Fourth Proportional to 475,999.40, 713,999.10 and 209,622.80

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Solution

The fourth proportional to 475,999.40, 713,999.10 and 209,622.80 is: 314,434.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,999.40 : 713,999.10 = 209,622.80 : x
  2. Step 2: Convert to fraction form
    475,999.40/713,999.10 = 209,622.80/x
  3. Step 3: Cross multiply
    475,999.40x = 713,999.10 × 209,622.80
  4. Step 4: Simplify right side
    475,999.40x = 149,670,490,539.48
  5. Step 5: Solve for x
    x = 149,670,490,539.48/475,999.40
  6. Step 6: Final answer
    x = 314,434.20

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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.