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Finding the Fourth Proportional to 286,719.04, 395,682.42 and 157,667.38

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Solution

The fourth proportional to 286,719.04, 395,682.42 and 157,667.38 is: 217,586.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,719.04 : 395,682.42 = 157,667.38 : x
  2. Step 2: Convert to fraction form
    286,719.04/395,682.42 = 157,667.38/x
  3. Step 3: Cross multiply
    286,719.04x = 395,682.42 × 157,667.38
  4. Step 4: Simplify right side
    286,719.04x = 62,386,210,473.46
  5. Step 5: Solve for x
    x = 62,386,210,473.46/286,719.04
  6. Step 6: Final answer
    x = 217,586.56

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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.