Home / 309,512,851.28-427,127,720.64-170,280,626.12

Finding the Fourth Proportional to 309,512,851.28, 427,127,720.64 and 170,280,626.12

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Solution

The fourth proportional to 309,512,851.28, 427,127,720.64 and 170,280,626.12 is: 234,987,256.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,512,851.28 : 427,127,720.64 = 170,280,626.12 : x
  2. Step 2: Convert to fraction form
    309,512,851.28/427,127,720.64 = 170,280,626.12/x
  3. Step 3: Cross multiply
    309,512,851.28x = 427,127,720.64 × 170,280,626.12
  4. Step 4: Simplify right side
    309,512,851.28x = 72,731,575,703,787,648
  5. Step 5: Solve for x
    x = 72,731,575,703,787,648/309,512,851.28
  6. Step 6: Final answer
    x = 234,987,256.27

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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.