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Finding the Fourth Proportional to 319,316.45, 478,976.63 and 94,679.01

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Solution

The fourth proportional to 319,316.45, 478,976.63 and 94,679.01 is: 142,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,316.45 : 478,976.63 = 94,679.01 : x
  2. Step 2: Convert to fraction form
    319,316.45/478,976.63 = 94,679.01/x
  3. Step 3: Cross multiply
    319,316.45x = 478,976.63 × 94,679.01
  4. Step 4: Simplify right side
    319,316.45x = 45,349,032,668.14
  5. Step 5: Solve for x
    x = 45,349,032,668.14/319,316.45
  6. Step 6: Final answer
    x = 142,019.10

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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.