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Finding the Fourth Proportional to 319,375.66, 478,981.74 and 94,683.58

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Solution

The fourth proportional to 319,375.66, 478,981.74 and 94,683.58 is: 142,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,375.66 : 478,981.74 = 94,683.58 : x
  2. Step 2: Convert to fraction form
    319,375.66/478,981.74 = 94,683.58/x
  3. Step 3: Cross multiply
    319,375.66x = 478,981.74 × 94,683.58
  4. Step 4: Simplify right side
    319,375.66x = 45,351,705,897.83
  5. Step 5: Solve for x
    x = 45,351,705,897.83/319,375.66
  6. Step 6: Final answer
    x = 142,001.13

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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.