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Finding the Fourth Proportional to 478,755.56, 717,946.48 and 208,966.21

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Solution

The fourth proportional to 478,755.56, 717,946.48 and 208,966.21 is: 313,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,755.56 : 717,946.48 = 208,966.21 : x
  2. Step 2: Convert to fraction form
    478,755.56/717,946.48 = 208,966.21/x
  3. Step 3: Cross multiply
    478,755.56x = 717,946.48 × 208,966.21
  4. Step 4: Simplify right side
    478,755.56x = 150,026,554,908.44
  5. Step 5: Solve for x
    x = 150,026,554,908.44/478,755.56
  6. Step 6: Final answer
    x = 313,367.75

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1.5x scale

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.