Home / 389,369.43-537,328.76-217,285.61

Finding the Fourth Proportional to 389,369.43, 537,328.76 and 217,285.61

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Solution

The fourth proportional to 389,369.43, 537,328.76 and 217,285.61 is: 299,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,369.43 : 537,328.76 = 217,285.61 : x
  2. Step 2: Convert to fraction form
    389,369.43/537,328.76 = 217,285.61/x
  3. Step 3: Cross multiply
    389,369.43x = 537,328.76 × 217,285.61
  4. Step 4: Simplify right side
    389,369.43x = 116,753,803,614.07
  5. Step 5: Solve for x
    x = 116,753,803,614.07/389,369.43
  6. Step 6: Final answer
    x = 299,853.54

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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.