Home / 309,820.10-464,137.71-209,487.83

Finding the Fourth Proportional to 309,820.10, 464,137.71 and 209,487.83

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Solution

The fourth proportional to 309,820.10, 464,137.71 and 209,487.83 is: 313,831.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,820.10 : 464,137.71 = 209,487.83 : x
  2. Step 2: Convert to fraction form
    309,820.10/464,137.71 = 209,487.83/x
  3. Step 3: Cross multiply
    309,820.10x = 464,137.71 × 209,487.83
  4. Step 4: Simplify right side
    309,820.10x = 97,231,199,368.38
  5. Step 5: Solve for x
    x = 97,231,199,368.38/309,820.10
  6. Step 6: Final answer
    x = 313,831.16

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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.