Home / 389,206.17-537,103.58-219,439.08

Finding the Fourth Proportional to 389,206.17, 537,103.58 and 219,439.08

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Solution

The fourth proportional to 389,206.17, 537,103.58 and 219,439.08 is: 302,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,206.17 : 537,103.58 = 219,439.08 : x
  2. Step 2: Convert to fraction form
    389,206.17/537,103.58 = 219,439.08/x
  3. Step 3: Cross multiply
    389,206.17x = 537,103.58 × 219,439.08
  4. Step 4: Simplify right side
    389,206.17x = 117,861,514,362.71
  5. Step 5: Solve for x
    x = 117,861,514,362.71/389,206.17
  6. Step 6: Final answer
    x = 302,825.40

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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.