Home / 287,151.07-396,162.13-286,708.21

Finding the Fourth Proportional to 287,151.07, 396,162.13 and 286,708.21

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Solution

The fourth proportional to 287,151.07, 396,162.13 and 286,708.21 is: 395,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,151.07 : 396,162.13 = 286,708.21 : x
  2. Step 2: Convert to fraction form
    287,151.07/396,162.13 = 286,708.21/x
  3. Step 3: Cross multiply
    287,151.07x = 396,162.13 × 286,708.21
  4. Step 4: Simplify right side
    287,151.07x = 113,582,935,162.09
  5. Step 5: Solve for x
    x = 113,582,935,162.09/287,151.07
  6. Step 6: Final answer
    x = 395,551.15

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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.