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Finding the Fourth Proportional to 352,036.80, 528,055.20 and 339,595.20

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Solution

The fourth proportional to 352,036.80, 528,055.20 and 339,595.20 is: 509,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,036.80 : 528,055.20 = 339,595.20 : x
  2. Step 2: Convert to fraction form
    352,036.80/528,055.20 = 339,595.20/x
  3. Step 3: Cross multiply
    352,036.80x = 528,055.20 × 339,595.20
  4. Step 4: Simplify right side
    352,036.80x = 179,325,011,255.04
  5. Step 5: Solve for x
    x = 179,325,011,255.04/352,036.80
  6. Step 6: Final answer
    x = 509,392.80

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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.