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Finding the Fourth Proportional to 319,666.76, 479,118.81 and 148,657.62

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Solution

The fourth proportional to 319,666.76, 479,118.81 and 148,657.62 is: 222,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,666.76 : 479,118.81 = 148,657.62 : x
  2. Step 2: Convert to fraction form
    319,666.76/479,118.81 = 148,657.62/x
  3. Step 3: Cross multiply
    319,666.76x = 479,118.81 × 148,657.62
  4. Step 4: Simplify right side
    319,666.76x = 71,224,661,991.83
  5. Step 5: Solve for x
    x = 71,224,661,991.83/319,666.76
  6. Step 6: Final answer
    x = 222,809.10

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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.