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Finding the Fourth Proportional to 319,303.35, 478,816.23 and 91,548.81

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Solution

The fourth proportional to 319,303.35, 478,816.23 and 91,548.81 is: 137,283.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,303.35 : 478,816.23 = 91,548.81 : x
  2. Step 2: Convert to fraction form
    319,303.35/478,816.23 = 91,548.81/x
  3. Step 3: Cross multiply
    319,303.35x = 478,816.23 × 91,548.81
  4. Step 4: Simplify right side
    319,303.35x = 43,835,056,065.19
  5. Step 5: Solve for x
    x = 43,835,056,065.19/319,303.35
  6. Step 6: Final answer
    x = 137,283.42

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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.