Home / 389,189.08-537,073.80-219,423.40

Finding the Fourth Proportional to 389,189.08, 537,073.80 and 219,423.40

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Solution

The fourth proportional to 389,189.08, 537,073.80 and 219,423.40 is: 302,800.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,189.08 : 537,073.80 = 219,423.40 : x
  2. Step 2: Convert to fraction form
    389,189.08/537,073.80 = 219,423.40/x
  3. Step 3: Cross multiply
    389,189.08x = 537,073.80 × 219,423.40
  4. Step 4: Simplify right side
    389,189.08x = 117,846,559,246.92
  5. Step 5: Solve for x
    x = 117,846,559,246.92/389,189.08
  6. Step 6: Final answer
    x = 302,800.27

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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.