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Finding the Fourth Proportional to 529,266.26, 730,384.34 and 311,601.44

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Solution

The fourth proportional to 529,266.26, 730,384.34 and 311,601.44 is: 430,008.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,266.26 : 730,384.34 = 311,601.44 : x
  2. Step 2: Convert to fraction form
    529,266.26/730,384.34 = 311,601.44/x
  3. Step 3: Cross multiply
    529,266.26x = 730,384.34 × 311,601.44
  4. Step 4: Simplify right side
    529,266.26x = 227,588,812,097.45
  5. Step 5: Solve for x
    x = 227,588,812,097.45/529,266.26
  6. Step 6: Final answer
    x = 430,008.16

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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.