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Finding the Fourth Proportional to 319,008.38, 478,349.82 and 105,699.33

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Solution

The fourth proportional to 319,008.38, 478,349.82 and 105,699.33 is: 158,495.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,008.38 : 478,349.82 = 105,699.33 : x
  2. Step 2: Convert to fraction form
    319,008.38/478,349.82 = 105,699.33/x
  3. Step 3: Cross multiply
    319,008.38x = 478,349.82 × 105,699.33
  4. Step 4: Simplify right side
    319,008.38x = 50,561,255,479.62
  5. Step 5: Solve for x
    x = 50,561,255,479.62/319,008.38
  6. Step 6: Final answer
    x = 158,495.07

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1.5x scale

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.