Home / 285,209.46-393,593.70-156,145.77

Finding the Fourth Proportional to 285,209.46, 393,593.70 and 156,145.77

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Solution

The fourth proportional to 285,209.46, 393,593.70 and 156,145.77 is: 215,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,209.46 : 393,593.70 = 156,145.77 : x
  2. Step 2: Convert to fraction form
    285,209.46/393,593.70 = 156,145.77/x
  3. Step 3: Cross multiply
    285,209.46x = 393,593.70 × 156,145.77
  4. Step 4: Simplify right side
    285,209.46x = 61,457,988,604.95
  5. Step 5: Solve for x
    x = 61,457,988,604.95/285,209.46
  6. Step 6: Final answer
    x = 215,483.70

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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.