Home / 286,742.87-395,715.09-157,686.61

Finding the Fourth Proportional to 286,742.87, 395,715.09 and 157,686.61

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Solution

The fourth proportional to 286,742.87, 395,715.09 and 157,686.61 is: 217,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,742.87 : 395,715.09 = 157,686.61 : x
  2. Step 2: Convert to fraction form
    286,742.87/395,715.09 = 157,686.61/x
  3. Step 3: Cross multiply
    286,742.87x = 395,715.09 × 157,686.61
  4. Step 4: Simplify right side
    286,742.87x = 62,398,970,279.51
  5. Step 5: Solve for x
    x = 62,398,970,279.51/286,742.87
  6. Step 6: Final answer
    x = 217,612.98

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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.