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Finding the Fourth Proportional to 389,173.86, 537,085.08 and 219,418.92

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Solution

The fourth proportional to 389,173.86, 537,085.08 and 219,418.92 is: 302,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,173.86 : 537,085.08 = 219,418.92 : x
  2. Step 2: Convert to fraction form
    389,173.86/537,085.08 = 219,418.92/x
  3. Step 3: Cross multiply
    389,173.86x = 537,085.08 × 219,418.92
  4. Step 4: Simplify right side
    389,173.86x = 117,846,628,201.71
  5. Step 5: Solve for x
    x = 117,846,628,201.71/389,173.86
  6. Step 6: Final answer
    x = 302,812.29

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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.