Home / 389,173.90-537,059.10-219,406.81

Finding the Fourth Proportional to 389,173.90, 537,059.10 and 219,406.81

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Solution

The fourth proportional to 389,173.90, 537,059.10 and 219,406.81 is: 302,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,173.90 : 537,059.10 = 219,406.81 : x
  2. Step 2: Convert to fraction form
    389,173.90/537,059.10 = 219,406.81/x
  3. Step 3: Cross multiply
    389,173.90x = 537,059.10 × 219,406.81
  4. Step 4: Simplify right side
    389,173.90x = 117,834,423,912.47
  5. Step 5: Solve for x
    x = 117,834,423,912.47/389,173.90
  6. Step 6: Final answer
    x = 302,780.90

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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.