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Finding the Fourth Proportional to 371,919.69, 557,885.69 and 161,557.63

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Solution

The fourth proportional to 371,919.69, 557,885.69 and 161,557.63 is: 242,339.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,919.69 : 557,885.69 = 161,557.63 : x
  2. Step 2: Convert to fraction form
    371,919.69/557,885.69 = 161,557.63/x
  3. Step 3: Cross multiply
    371,919.69x = 557,885.69 × 161,557.63
  4. Step 4: Simplify right side
    371,919.69x = 90,130,688,896.49
  5. Step 5: Solve for x
    x = 90,130,688,896.49/371,919.69
  6. Step 6: Final answer
    x = 242,339.12

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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.