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Finding the Fourth Proportional to 321,053.40, 481,611.96 and 118,702.51

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Solution

The fourth proportional to 321,053.40, 481,611.96 and 118,702.51 is: 178,065.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,053.40 : 481,611.96 = 118,702.51 : x
  2. Step 2: Convert to fraction form
    321,053.40/481,611.96 = 118,702.51/x
  3. Step 3: Cross multiply
    321,053.40x = 481,611.96 × 118,702.51
  4. Step 4: Simplify right side
    321,053.40x = 57,168,547,293.99
  5. Step 5: Solve for x
    x = 57,168,547,293.99/321,053.40
  6. Step 6: Final answer
    x = 178,065.54

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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.