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Finding the Fourth Proportional to 341,368.61, 512,118.98 and 130,990.19

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Solution

The fourth proportional to 341,368.61, 512,118.98 and 130,990.19 is: 196,510.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,368.61 : 512,118.98 = 130,990.19 : x
  2. Step 2: Convert to fraction form
    341,368.61/512,118.98 = 130,990.19/x
  3. Step 3: Cross multiply
    341,368.61x = 512,118.98 × 130,990.19
  4. Step 4: Simplify right side
    341,368.61x = 67,082,561,837.86
  5. Step 5: Solve for x
    x = 67,082,561,837.86/341,368.61
  6. Step 6: Final answer
    x = 196,510.63

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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.