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Finding the Fourth Proportional to 345,287.40, 517,931.10 and 95,969.40

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Solution

The fourth proportional to 345,287.40, 517,931.10 and 95,969.40 is: 143,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,287.40 : 517,931.10 = 95,969.40 : x
  2. Step 2: Convert to fraction form
    345,287.40/517,931.10 = 95,969.40/x
  3. Step 3: Cross multiply
    345,287.40x = 517,931.10 × 95,969.40
  4. Step 4: Simplify right side
    345,287.40x = 49,705,536,908.34
  5. Step 5: Solve for x
    x = 49,705,536,908.34/345,287.40
  6. Step 6: Final answer
    x = 143,954.10

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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.