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Finding the Fourth Proportional to 529,281.75, 730,408.82 and 290,817.75

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Solution

The fourth proportional to 529,281.75, 730,408.82 and 290,817.75 is: 401,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,281.75 : 730,408.82 = 290,817.75 : x
  2. Step 2: Convert to fraction form
    529,281.75/730,408.82 = 290,817.75/x
  3. Step 3: Cross multiply
    529,281.75x = 730,408.82 × 290,817.75
  4. Step 4: Simplify right side
    529,281.75x = 212,415,848,158.47
  5. Step 5: Solve for x
    x = 212,415,848,158.47/529,281.75
  6. Step 6: Final answer
    x = 401,328.50

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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.