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Finding the Fourth Proportional to 298,708.61, 448,145.91 and 130,243.64

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Solution

The fourth proportional to 298,708.61, 448,145.91 and 130,243.64 is: 195,401.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,708.61 : 448,145.91 = 130,243.64 : x
  2. Step 2: Convert to fraction form
    298,708.61/448,145.91 = 130,243.64/x
  3. Step 3: Cross multiply
    298,708.61x = 448,145.91 × 130,243.64
  4. Step 4: Simplify right side
    298,708.61x = 58,368,152,328.78
  5. Step 5: Solve for x
    x = 58,368,152,328.78/298,708.61
  6. Step 6: Final answer
    x = 195,401.64

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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.