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Finding the Fourth Proportional to 405,017.20, 607,525.80 and 340,063.30

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Solution

The fourth proportional to 405,017.20, 607,525.80 and 340,063.30 is: 510,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,017.20 : 607,525.80 = 340,063.30 : x
  2. Step 2: Convert to fraction form
    405,017.20/607,525.80 = 340,063.30/x
  3. Step 3: Cross multiply
    405,017.20x = 607,525.80 × 340,063.30
  4. Step 4: Simplify right side
    405,017.20x = 206,597,228,383.14
  5. Step 5: Solve for x
    x = 206,597,228,383.14/405,017.20
  6. Step 6: Final answer
    x = 510,094.95

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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.