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Finding the Fourth Proportional to 352,121, 528,048.80 and 127,425.86

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Solution

The fourth proportional to 352,121, 528,048.80 and 127,425.86 is: 191,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,121 : 528,048.80 = 127,425.86 : x
  2. Step 2: Convert to fraction form
    352,121/528,048.80 = 127,425.86/x
  3. Step 3: Cross multiply
    352,121x = 528,048.80 × 127,425.86
  4. Step 4: Simplify right side
    352,121x = 67,287,072,461.97
  5. Step 5: Solve for x
    x = 67,287,072,461.97/352,121
  6. Step 6: Final answer
    x = 191,090.77

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