Home / 309,621.07-427,280.61-171,802.50

Finding the Fourth Proportional to 309,621.07, 427,280.61 and 171,802.50

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Solution

The fourth proportional to 309,621.07, 427,280.61 and 171,802.50 is: 237,089.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,621.07 : 427,280.61 = 171,802.50 : x
  2. Step 2: Convert to fraction form
    309,621.07/427,280.61 = 171,802.50/x
  3. Step 3: Cross multiply
    309,621.07x = 427,280.61 × 171,802.50
  4. Step 4: Simplify right side
    309,621.07x = 73,407,876,999.53
  5. Step 5: Solve for x
    x = 73,407,876,999.53/309,621.07
  6. Step 6: Final answer
    x = 237,089.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.