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Finding the Fourth Proportional to 286,678.89, 395,621.25 and 157,622.95

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Solution

The fourth proportional to 286,678.89, 395,621.25 and 157,622.95 is: 217,522.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,678.89 : 395,621.25 = 157,622.95 : x
  2. Step 2: Convert to fraction form
    286,678.89/395,621.25 = 157,622.95/x
  3. Step 3: Cross multiply
    286,678.89x = 395,621.25 × 157,622.95
  4. Step 4: Simplify right side
    286,678.89x = 62,358,988,507.69
  5. Step 5: Solve for x
    x = 62,358,988,507.69/286,678.89
  6. Step 6: Final answer
    x = 217,522.08

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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.