Home / 286,678.39-395,620.56-157,622.45

Finding the Fourth Proportional to 286,678.39, 395,620.56 and 157,622.45

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Solution

The fourth proportional to 286,678.39, 395,620.56 and 157,622.45 is: 217,521.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,678.39 : 395,620.56 = 157,622.45 : x
  2. Step 2: Convert to fraction form
    286,678.39/395,620.56 = 157,622.45/x
  3. Step 3: Cross multiply
    286,678.39x = 395,620.56 × 157,622.45
  4. Step 4: Simplify right side
    286,678.39x = 62,358,681,937.57
  5. Step 5: Solve for x
    x = 62,358,681,937.57/286,678.39
  6. Step 6: Final answer
    x = 217,521.39

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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.