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Finding the Fourth Proportional to 487,290.98, 730,445.63 and 203,138.73

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Solution

The fourth proportional to 487,290.98, 730,445.63 and 203,138.73 is: 304,503.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,290.98 : 730,445.63 = 203,138.73 : x
  2. Step 2: Convert to fraction form
    487,290.98/730,445.63 = 203,138.73/x
  3. Step 3: Cross multiply
    487,290.98x = 730,445.63 × 203,138.73
  4. Step 4: Simplify right side
    487,290.98x = 148,381,796,596.56
  5. Step 5: Solve for x
    x = 148,381,796,596.56/487,290.98
  6. Step 6: Final answer
    x = 304,503.47

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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.