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Finding the Fourth Proportional to 352,392.40, 528,588.60 and 212,424.40

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Solution

The fourth proportional to 352,392.40, 528,588.60 and 212,424.40 is: 318,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,392.40 : 528,588.60 = 212,424.40 : x
  2. Step 2: Convert to fraction form
    352,392.40/528,588.60 = 212,424.40/x
  3. Step 3: Cross multiply
    352,392.40x = 528,588.60 × 212,424.40
  4. Step 4: Simplify right side
    352,392.40x = 112,285,116,201.84
  5. Step 5: Solve for x
    x = 112,285,116,201.84/352,392.40
  6. Step 6: Final answer
    x = 318,636.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.