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Finding the Fourth Proportional to 199,430.61, 299,081.00 and 66,275.12

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Solution

The fourth proportional to 199,430.61, 299,081.00 and 66,275.12 is: 99,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,430.61 : 299,081.00 = 66,275.12 : x
  2. Step 2: Convert to fraction form
    199,430.61/299,081.00 = 66,275.12/x
  3. Step 3: Cross multiply
    199,430.61x = 299,081.00 × 66,275.12
  4. Step 4: Simplify right side
    199,430.61x = 19,821,627,337.94
  5. Step 5: Solve for x
    x = 19,821,627,337.94/199,430.61
  6. Step 6: Final answer
    x = 99,391.10

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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.