Home / 285,210.74-393,595.47-156,147.04

Finding the Fourth Proportional to 285,210.74, 393,595.47 and 156,147.04

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Solution

The fourth proportional to 285,210.74, 393,595.47 and 156,147.04 is: 215,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,210.74 : 393,595.47 = 156,147.04 : x
  2. Step 2: Convert to fraction form
    285,210.74/393,595.47 = 156,147.04/x
  3. Step 3: Cross multiply
    285,210.74x = 393,595.47 × 156,147.04
  4. Step 4: Simplify right side
    285,210.74x = 61,458,766,028.37
  5. Step 5: Solve for x
    x = 61,458,766,028.37/285,210.74
  6. Step 6: Final answer
    x = 215,485.45

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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.