Home / 389,173.85-537,039.41-217,109.80

Finding the Fourth Proportional to 389,173.85, 537,039.41 and 217,109.80

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Solution

The fourth proportional to 389,173.85, 537,039.41 and 217,109.80 is: 299,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,173.85 : 537,039.41 = 217,109.80 : x
  2. Step 2: Convert to fraction form
    389,173.85/537,039.41 = 217,109.80/x
  3. Step 3: Cross multiply
    389,173.85x = 537,039.41 × 217,109.80
  4. Step 4: Simplify right side
    389,173.85x = 116,596,518,897.22
  5. Step 5: Solve for x
    x = 116,596,518,897.22/389,173.85
  6. Step 6: Final answer
    x = 299,600.09

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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.