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Finding the Fourth Proportional to 398,216.80, 597,317.52 and 98,698

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Solution

The fourth proportional to 398,216.80, 597,317.52 and 98,698 is: 148,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,216.80 : 597,317.52 = 98,698 : x
  2. Step 2: Convert to fraction form
    398,216.80/597,317.52 = 98,698/x
  3. Step 3: Cross multiply
    398,216.80x = 597,317.52 × 98,698
  4. Step 4: Simplify right side
    398,216.80x = 58,954,044,588.96
  5. Step 5: Solve for x
    x = 58,954,044,588.96/398,216.80
  6. Step 6: Final answer
    x = 148,045.10

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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.