Home / 347,867.10-521,109.45-189,812.70

Finding the Fourth Proportional to 347,867.10, 521,109.45 and 189,812.70

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Solution

The fourth proportional to 347,867.10, 521,109.45 and 189,812.70 is: 284,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,867.10 : 521,109.45 = 189,812.70 : x
  2. Step 2: Convert to fraction form
    347,867.10/521,109.45 = 189,812.70/x
  3. Step 3: Cross multiply
    347,867.10x = 521,109.45 × 189,812.70
  4. Step 4: Simplify right side
    347,867.10x = 98,913,191,700.02
  5. Step 5: Solve for x
    x = 98,913,191,700.02/347,867.10
  6. Step 6: Final answer
    x = 284,341.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.