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Finding the Fourth Proportional to 319,005.76, 478,578.72 and 94,348.68

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Solution

The fourth proportional to 319,005.76, 478,578.72 and 94,348.68 is: 141,543.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,005.76 : 478,578.72 = 94,348.68 : x
  2. Step 2: Convert to fraction form
    319,005.76/478,578.72 = 94,348.68/x
  3. Step 3: Cross multiply
    319,005.76x = 478,578.72 × 94,348.68
  4. Step 4: Simplify right side
    319,005.76x = 45,153,270,036.35
  5. Step 5: Solve for x
    x = 45,153,270,036.35/319,005.76
  6. Step 6: Final answer
    x = 141,543.75

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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.