Home / 285,345.22-393,760.70-156,258.64

Finding the Fourth Proportional to 285,345.22, 393,760.70 and 156,258.64

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Solution

The fourth proportional to 285,345.22, 393,760.70 and 156,258.64 is: 215,628.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,345.22 : 393,760.70 = 156,258.64 : x
  2. Step 2: Convert to fraction form
    285,345.22/393,760.70 = 156,258.64/x
  3. Step 3: Cross multiply
    285,345.22x = 393,760.70 × 156,258.64
  4. Step 4: Simplify right side
    285,345.22x = 61,528,509,498.64
  5. Step 5: Solve for x
    x = 61,528,509,498.64/285,345.22
  6. Step 6: Final answer
    x = 215,628.32

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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.