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Finding the Fourth Proportional to 398,675.79, 598,027.80 and 99,157.94

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Solution

The fourth proportional to 398,675.79, 598,027.80 and 99,157.94 is: 148,740.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,675.79 : 598,027.80 = 99,157.94 : x
  2. Step 2: Convert to fraction form
    398,675.79/598,027.80 = 99,157.94/x
  3. Step 3: Cross multiply
    398,675.79x = 598,027.80 × 99,157.94
  4. Step 4: Simplify right side
    398,675.79x = 59,299,201,720.59
  5. Step 5: Solve for x
    x = 59,299,201,720.59/398,675.79
  6. Step 6: Final answer
    x = 148,740.41

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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.