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Finding the Fourth Proportional to 358,992.72, 538,487.64 and 134,370

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Solution

The fourth proportional to 358,992.72, 538,487.64 and 134,370 is: 201,554.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,992.72 : 538,487.64 = 134,370 : x
  2. Step 2: Convert to fraction form
    358,992.72/538,487.64 = 134,370/x
  3. Step 3: Cross multiply
    358,992.72x = 538,487.64 × 134,370
  4. Step 4: Simplify right side
    358,992.72x = 72,356,584,186.80
  5. Step 5: Solve for x
    x = 72,356,584,186.80/358,992.72
  6. Step 6: Final answer
    x = 201,554.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.