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Finding the Fourth Proportional to 405,294.76, 559,289.37 and 223,997.32

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Solution

The fourth proportional to 405,294.76, 559,289.37 and 223,997.32 is: 309,106.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,294.76 : 559,289.37 = 223,997.32 : x
  2. Step 2: Convert to fraction form
    405,294.76/559,289.37 = 223,997.32/x
  3. Step 3: Cross multiply
    405,294.76x = 559,289.37 × 223,997.32
  4. Step 4: Simplify right side
    405,294.76x = 125,279,319,984.49
  5. Step 5: Solve for x
    x = 125,279,319,984.49/405,294.76
  6. Step 6: Final answer
    x = 309,106.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.