Home / 285,284.28-393,697.14-156,220.68

Finding the Fourth Proportional to 285,284.28, 393,697.14 and 156,220.68

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Solution

The fourth proportional to 285,284.28, 393,697.14 and 156,220.68 is: 215,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,284.28 : 393,697.14 = 156,220.68 : x
  2. Step 2: Convert to fraction form
    285,284.28/393,697.14 = 156,220.68/x
  3. Step 3: Cross multiply
    285,284.28x = 393,697.14 × 156,220.68
  4. Step 4: Simplify right side
    285,284.28x = 61,503,634,924.86
  5. Step 5: Solve for x
    x = 61,503,634,924.86/285,284.28
  6. Step 6: Final answer
    x = 215,587.19

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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.