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Finding the Fourth Proportional to 617,132.28, 851,299.74 and 358,980.06

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Solution

The fourth proportional to 617,132.28, 851,299.74 and 358,980.06 is: 495,193.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,132.28 : 851,299.74 = 358,980.06 : x
  2. Step 2: Convert to fraction form
    617,132.28/851,299.74 = 358,980.06/x
  3. Step 3: Cross multiply
    617,132.28x = 851,299.74 × 358,980.06
  4. Step 4: Simplify right side
    617,132.28x = 305,599,631,743.18
  5. Step 5: Solve for x
    x = 305,599,631,743.18/617,132.28
  6. Step 6: Final answer
    x = 495,193.08

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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.