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Finding the Fourth Proportional to 376,172.27, 519,117.70 and 215,030.78

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Solution

The fourth proportional to 376,172.27, 519,117.70 and 215,030.78 is: 296,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,172.27 : 519,117.70 = 215,030.78 : x
  2. Step 2: Convert to fraction form
    376,172.27/519,117.70 = 215,030.78/x
  3. Step 3: Cross multiply
    376,172.27x = 519,117.70 × 215,030.78
  4. Step 4: Simplify right side
    376,172.27x = 111,626,280,272.06
  5. Step 5: Solve for x
    x = 111,626,280,272.06/376,172.27
  6. Step 6: Final answer
    x = 296,742.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.