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Finding the Fourth Proportional to 529,112.10, 730,180.60 and 311,368.90

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Solution

The fourth proportional to 529,112.10, 730,180.60 and 311,368.90 is: 429,692.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,112.10 : 730,180.60 = 311,368.90 : x
  2. Step 2: Convert to fraction form
    529,112.10/730,180.60 = 311,368.90/x
  3. Step 3: Cross multiply
    529,112.10x = 730,180.60 × 311,368.90
  4. Step 4: Simplify right side
    529,112.10x = 227,355,530,223.34
  5. Step 5: Solve for x
    x = 227,355,530,223.34/529,112.10
  6. Step 6: Final answer
    x = 429,692.56

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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.