Home / 389,126.16-536,954.76-287,207.28

Finding the Fourth Proportional to 389,126.16, 536,954.76 and 287,207.28

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Solution

The fourth proportional to 389,126.16, 536,954.76 and 287,207.28 is: 396,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,126.16 : 536,954.76 = 287,207.28 : x
  2. Step 2: Convert to fraction form
    389,126.16/536,954.76 = 287,207.28/x
  3. Step 3: Cross multiply
    389,126.16x = 536,954.76 × 287,207.28
  4. Step 4: Simplify right side
    389,126.16x = 154,217,316,102.65
  5. Step 5: Solve for x
    x = 154,217,316,102.65/389,126.16
  6. Step 6: Final answer
    x = 396,317.01

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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.