Home / 389,057.05-536,897.67-216,975.21

Finding the Fourth Proportional to 389,057.05, 536,897.67 and 216,975.21

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Solution

The fourth proportional to 389,057.05, 536,897.67 and 216,975.21 is: 299,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,057.05 : 536,897.67 = 216,975.21 : x
  2. Step 2: Convert to fraction form
    389,057.05/536,897.67 = 216,975.21/x
  3. Step 3: Cross multiply
    389,057.05x = 536,897.67 × 216,975.21
  4. Step 4: Simplify right side
    389,057.05x = 116,493,484,696.76
  5. Step 5: Solve for x
    x = 116,493,484,696.76/389,057.05
  6. Step 6: Final answer
    x = 299,425.20

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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.