Home / 283,638.54-391,419.21-156,314.25

Finding the Fourth Proportional to 283,638.54, 391,419.21 and 156,314.25

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Solution

The fourth proportional to 283,638.54, 391,419.21 and 156,314.25 is: 215,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,638.54 : 391,419.21 = 156,314.25 : x
  2. Step 2: Convert to fraction form
    283,638.54/391,419.21 = 156,314.25/x
  3. Step 3: Cross multiply
    283,638.54x = 391,419.21 × 156,314.25
  4. Step 4: Simplify right side
    283,638.54x = 61,184,400,246.74
  5. Step 5: Solve for x
    x = 61,184,400,246.74/283,638.54
  6. Step 6: Final answer
    x = 215,712.58

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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.