Home / 285,275.71-393,685.32-156,212.13

Finding the Fourth Proportional to 285,275.71, 393,685.32 and 156,212.13

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Solution

The fourth proportional to 285,275.71, 393,685.32 and 156,212.13 is: 215,575.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,275.71 : 393,685.32 = 156,212.13 : x
  2. Step 2: Convert to fraction form
    285,275.71/393,685.32 = 156,212.13/x
  3. Step 3: Cross multiply
    285,275.71x = 393,685.32 × 156,212.13
  4. Step 4: Simplify right side
    285,275.71x = 61,498,422,386.93
  5. Step 5: Solve for x
    x = 61,498,422,386.93/285,275.71
  6. Step 6: Final answer
    x = 215,575.39

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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.