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Finding the Fourth Proportional to 529,058.38, 730,105.83 and 287,345.67

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Solution

The fourth proportional to 529,058.38, 730,105.83 and 287,345.67 is: 396,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,058.38 : 730,105.83 = 287,345.67 : x
  2. Step 2: Convert to fraction form
    529,058.38/730,105.83 = 287,345.67/x
  3. Step 3: Cross multiply
    529,058.38x = 730,105.83 × 287,345.67
  4. Step 4: Simplify right side
    529,058.38x = 209,792,748,892.26
  5. Step 5: Solve for x
    x = 209,792,748,892.26/529,058.38
  6. Step 6: Final answer
    x = 396,539.89

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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.