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Finding the Fourth Proportional to 399,261.42, 598,393.73 and 199,638.89

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Solution

The fourth proportional to 399,261.42, 598,393.73 and 199,638.89 is: 299,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,261.42 : 598,393.73 = 199,638.89 : x
  2. Step 2: Convert to fraction form
    399,261.42/598,393.73 = 199,638.89/x
  3. Step 3: Cross multiply
    399,261.42x = 598,393.73 × 199,638.89
  4. Step 4: Simplify right side
    399,261.42x = 119,462,660,040.16
  5. Step 5: Solve for x
    x = 119,462,660,040.16/399,261.42
  6. Step 6: Final answer
    x = 299,209.12

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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.