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Finding the Fourth Proportional to 203,275.98, 305,193.26 and 103,503.21

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Solution

The fourth proportional to 203,275.98, 305,193.26 and 103,503.21 is: 155,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,275.98 : 305,193.26 = 103,503.21 : x
  2. Step 2: Convert to fraction form
    203,275.98/305,193.26 = 103,503.21/x
  3. Step 3: Cross multiply
    203,275.98x = 305,193.26 × 103,503.21
  4. Step 4: Simplify right side
    203,275.98x = 31,588,482,080.36
  5. Step 5: Solve for x
    x = 31,588,482,080.36/203,275.98
  6. Step 6: Final answer
    x = 155,397.03

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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.