Home / 371,116.40-512,106.18-209,983.64

Finding the Fourth Proportional to 371,116.40, 512,106.18 and 209,983.64

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Solution

The fourth proportional to 371,116.40, 512,106.18 and 209,983.64 is: 289,757.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,116.40 : 512,106.18 = 209,983.64 : x
  2. Step 2: Convert to fraction form
    371,116.40/512,106.18 = 209,983.64/x
  3. Step 3: Cross multiply
    371,116.40x = 512,106.18 × 209,983.64
  4. Step 4: Simplify right side
    371,116.40x = 107,533,919,742.90
  5. Step 5: Solve for x
    x = 107,533,919,742.90/371,116.40
  6. Step 6: Final answer
    x = 289,757.93

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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.