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Finding the Fourth Proportional to 281,989.68, 423,009.45 and 79,587.59

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Solution

The fourth proportional to 281,989.68, 423,009.45 and 79,587.59 is: 119,388.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,989.68 : 423,009.45 = 79,587.59 : x
  2. Step 2: Convert to fraction form
    281,989.68/423,009.45 = 79,587.59/x
  3. Step 3: Cross multiply
    281,989.68x = 423,009.45 × 79,587.59
  4. Step 4: Simplify right side
    281,989.68x = 33,666,300,557.68
  5. Step 5: Solve for x
    x = 33,666,300,557.68/281,989.68
  6. Step 6: Final answer
    x = 119,388.41

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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.