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Finding the Fourth Proportional to 371,805.60, 557,092.80 and 213,758.40

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Solution

The fourth proportional to 371,805.60, 557,092.80 and 213,758.40 is: 320,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,805.60 : 557,092.80 = 213,758.40 : x
  2. Step 2: Convert to fraction form
    371,805.60/557,092.80 = 213,758.40/x
  3. Step 3: Cross multiply
    371,805.60x = 557,092.80 × 213,758.40
  4. Step 4: Simplify right side
    371,805.60x = 119,083,265,579.52
  5. Step 5: Solve for x
    x = 119,083,265,579.52/371,805.60
  6. Step 6: Final answer
    x = 320,283.68

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1.5x scale

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.