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Finding the Fourth Proportional to 385,580.63, 532,101.11 and 215,814.75

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Solution

The fourth proportional to 385,580.63, 532,101.11 and 215,814.75 is: 297,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,580.63 : 532,101.11 = 215,814.75 : x
  2. Step 2: Convert to fraction form
    385,580.63/532,101.11 = 215,814.75/x
  3. Step 3: Cross multiply
    385,580.63x = 532,101.11 × 215,814.75
  4. Step 4: Simplify right side
    385,580.63x = 114,835,266,950.30
  5. Step 5: Solve for x
    x = 114,835,266,950.30/385,580.63
  6. Step 6: Final answer
    x = 297,824.27

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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.