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Finding the Fourth Proportional to 198,038.88, 297,119.60 and 64,920.16

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Solution

The fourth proportional to 198,038.88, 297,119.60 and 64,920.16 is: 97,400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,038.88 : 297,119.60 = 64,920.16 : x
  2. Step 2: Convert to fraction form
    198,038.88/297,119.60 = 64,920.16/x
  3. Step 3: Cross multiply
    198,038.88x = 297,119.60 × 64,920.16
  4. Step 4: Simplify right side
    198,038.88x = 19,289,051,971.14
  5. Step 5: Solve for x
    x = 19,289,051,971.14/198,038.88
  6. Step 6: Final answer
    x = 97,400.33

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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.