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Finding the Fourth Proportional to 360,811.39, 497,885.85 and 215,588.23

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Solution

The fourth proportional to 360,811.39, 497,885.85 and 215,588.23 is: 297,491.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,811.39 : 497,885.85 = 215,588.23 : x
  2. Step 2: Convert to fraction form
    360,811.39/497,885.85 = 215,588.23/x
  3. Step 3: Cross multiply
    360,811.39x = 497,885.85 × 215,588.23
  4. Step 4: Simplify right side
    360,811.39x = 107,338,329,143.55
  5. Step 5: Solve for x
    x = 107,338,329,143.55/360,811.39
  6. Step 6: Final answer
    x = 297,491.52

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1.5x scale

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.