Home / 309,742.41-427,594.70-207,730.56

Finding the Fourth Proportional to 309,742.41, 427,594.70 and 207,730.56

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Solution

The fourth proportional to 309,742.41, 427,594.70 and 207,730.56 is: 286,768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,742.41 : 427,594.70 = 207,730.56 : x
  2. Step 2: Convert to fraction form
    309,742.41/427,594.70 = 207,730.56/x
  3. Step 3: Cross multiply
    309,742.41x = 427,594.70 × 207,730.56
  4. Step 4: Simplify right side
    309,742.41x = 88,824,486,484.03
  5. Step 5: Solve for x
    x = 88,824,486,484.03/309,742.41
  6. Step 6: Final answer
    x = 286,768.89

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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.