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Finding the Fourth Proportional to 490,573.55, 735,718.16 and 190,987.35

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Solution

The fourth proportional to 490,573.55, 735,718.16 and 190,987.35 is: 286,425.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,573.55 : 735,718.16 = 190,987.35 : x
  2. Step 2: Convert to fraction form
    490,573.55/735,718.16 = 190,987.35/x
  3. Step 3: Cross multiply
    490,573.55x = 735,718.16 × 190,987.35
  4. Step 4: Simplify right side
    490,573.55x = 140,512,860,770.34
  5. Step 5: Solve for x
    x = 140,512,860,770.34/490,573.55
  6. Step 6: Final answer
    x = 286,425.68

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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.