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Finding the Fourth Proportional to 529,381.50, 730,546.47 and 290,917.50

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Solution

The fourth proportional to 529,381.50, 730,546.47 and 290,917.50 is: 401,466.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,381.50 : 730,546.47 = 290,917.50 : x
  2. Step 2: Convert to fraction form
    529,381.50/730,546.47 = 290,917.50/x
  3. Step 3: Cross multiply
    529,381.50x = 730,546.47 × 290,917.50
  4. Step 4: Simplify right side
    529,381.50x = 212,528,752,686.23
  5. Step 5: Solve for x
    x = 212,528,752,686.23/529,381.50
  6. Step 6: Final answer
    x = 401,466.15

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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.