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Finding the Fourth Proportional to 528,130.80, 792,429.48 and 213,202.80

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Solution

The fourth proportional to 528,130.80, 792,429.48 and 213,202.80 is: 319,898.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,130.80 : 792,429.48 = 213,202.80 : x
  2. Step 2: Convert to fraction form
    528,130.80/792,429.48 = 213,202.80/x
  3. Step 3: Cross multiply
    528,130.80x = 792,429.48 × 213,202.80
  4. Step 4: Simplify right side
    528,130.80x = 168,948,183,938.54
  5. Step 5: Solve for x
    x = 168,948,183,938.54/528,130.80
  6. Step 6: Final answer
    x = 319,898.37

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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.