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Finding the Fourth Proportional to 309,507.39, 464,302.40 and 122,475.15

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Solution

The fourth proportional to 309,507.39, 464,302.40 and 122,475.15 is: 183,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,507.39 : 464,302.40 = 122,475.15 : x
  2. Step 2: Convert to fraction form
    309,507.39/464,302.40 = 122,475.15/x
  3. Step 3: Cross multiply
    309,507.39x = 464,302.40 × 122,475.15
  4. Step 4: Simplify right side
    309,507.39x = 56,865,507,246.12
  5. Step 5: Solve for x
    x = 56,865,507,246.12/309,507.39
  6. Step 6: Final answer
    x = 183,729.08

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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.