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Finding the Fourth Proportional to 319,667.72, 480,045.90 and 306,293

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Solution

The fourth proportional to 319,667.72, 480,045.90 and 306,293 is: 459,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,667.72 : 480,045.90 = 306,293 : x
  2. Step 2: Convert to fraction form
    319,667.72/480,045.90 = 306,293/x
  3. Step 3: Cross multiply
    319,667.72x = 480,045.90 × 306,293
  4. Step 4: Simplify right side
    319,667.72x = 147,034,698,848.70
  5. Step 5: Solve for x
    x = 147,034,698,848.70/319,667.72
  6. Step 6: Final answer
    x = 459,961.05

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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.