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Finding the Fourth Proportional to 402,727.20, 604,090.80 and 192,775.20

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Solution

The fourth proportional to 402,727.20, 604,090.80 and 192,775.20 is: 289,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,727.20 : 604,090.80 = 192,775.20 : x
  2. Step 2: Convert to fraction form
    402,727.20/604,090.80 = 192,775.20/x
  3. Step 3: Cross multiply
    402,727.20x = 604,090.80 × 192,775.20
  4. Step 4: Simplify right side
    402,727.20x = 116,453,724,788.16
  5. Step 5: Solve for x
    x = 116,453,724,788.16/402,727.20
  6. Step 6: Final answer
    x = 289,162.80

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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.