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Finding the Fourth Proportional to 405,079.20, 559,023.12 and 254,259.36

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Solution

The fourth proportional to 405,079.20, 559,023.12 and 254,259.36 is: 350,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,079.20 : 559,023.12 = 254,259.36 : x
  2. Step 2: Convert to fraction form
    405,079.20/559,023.12 = 254,259.36/x
  3. Step 3: Cross multiply
    405,079.20x = 559,023.12 × 254,259.36
  4. Step 4: Simplify right side
    405,079.20x = 142,136,860,716.40
  5. Step 5: Solve for x
    x = 142,136,860,716.40/405,079.20
  6. Step 6: Final answer
    x = 350,886.59

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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.