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Finding the Fourth Proportional to 309,476.79, 464,346.45 and 169,071.39

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Solution

The fourth proportional to 309,476.79, 464,346.45 and 169,071.39 is: 253,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,476.79 : 464,346.45 = 169,071.39 : x
  2. Step 2: Convert to fraction form
    309,476.79/464,346.45 = 169,071.39/x
  3. Step 3: Cross multiply
    309,476.79x = 464,346.45 × 169,071.39
  4. Step 4: Simplify right side
    309,476.79x = 78,507,699,743.07
  5. Step 5: Solve for x
    x = 78,507,699,743.07/309,476.79
  6. Step 6: Final answer
    x = 253,678.80

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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.