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Finding the Fourth Proportional to 352,533.60, 528,022.80 and 212,047.20

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Solution

The fourth proportional to 352,533.60, 528,022.80 and 212,047.20 is: 317,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,533.60 : 528,022.80 = 212,047.20 : x
  2. Step 2: Convert to fraction form
    352,533.60/528,022.80 = 212,047.20/x
  3. Step 3: Cross multiply
    352,533.60x = 528,022.80 × 212,047.20
  4. Step 4: Simplify right side
    352,533.60x = 111,965,756,276.16
  5. Step 5: Solve for x
    x = 111,965,756,276.16/352,533.60
  6. Step 6: Final answer
    x = 317,603.08

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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.