Home / 309,746.42-427,600.22-207,734.56

Finding the Fourth Proportional to 309,746.42, 427,600.22 and 207,734.56

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Solution

The fourth proportional to 309,746.42, 427,600.22 and 207,734.56 is: 286,774.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,746.42 : 427,600.22 = 207,734.56 : x
  2. Step 2: Convert to fraction form
    309,746.42/427,600.22 = 207,734.56/x
  3. Step 3: Cross multiply
    309,746.42x = 427,600.22 × 207,734.56
  4. Step 4: Simplify right side
    309,746.42x = 88,827,343,557.60
  5. Step 5: Solve for x
    x = 88,827,343,557.60/309,746.42
  6. Step 6: Final answer
    x = 286,774.40

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1.5x scale

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.