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Finding the Fourth Proportional to 530,279.55, 731,784.78 and 300,881.88

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Solution

The fourth proportional to 530,279.55, 731,784.78 and 300,881.88 is: 415,216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,279.55 : 731,784.78 = 300,881.88 : x
  2. Step 2: Convert to fraction form
    530,279.55/731,784.78 = 300,881.88/x
  3. Step 3: Cross multiply
    530,279.55x = 731,784.78 × 300,881.88
  4. Step 4: Simplify right side
    530,279.55x = 220,180,780,361.79
  5. Step 5: Solve for x
    x = 220,180,780,361.79/530,279.55
  6. Step 6: Final answer
    x = 415,216.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.