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Finding the Fourth Proportional to 315,625.33, 473,439.03 and 78,968.01

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Solution

The fourth proportional to 315,625.33, 473,439.03 and 78,968.01 is: 118,452.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,625.33 : 473,439.03 = 78,968.01 : x
  2. Step 2: Convert to fraction form
    315,625.33/473,439.03 = 78,968.01/x
  3. Step 3: Cross multiply
    315,625.33x = 473,439.03 × 78,968.01
  4. Step 4: Simplify right side
    315,625.33x = 37,386,539,534.70
  5. Step 5: Solve for x
    x = 37,386,539,534.70/315,625.33
  6. Step 6: Final answer
    x = 118,452.28

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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.