Home / 426,683.47-639,810.93-142,273.34

Finding the Fourth Proportional to 426,683.47, 639,810.93 and 142,273.34

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Solution

The fourth proportional to 426,683.47, 639,810.93 and 142,273.34 is: 213,338.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,683.47 : 639,810.93 = 142,273.34 : x
  2. Step 2: Convert to fraction form
    426,683.47/639,810.93 = 142,273.34/x
  3. Step 3: Cross multiply
    426,683.47x = 639,810.93 × 142,273.34
  4. Step 4: Simplify right side
    426,683.47x = 91,028,037,979.61
  5. Step 5: Solve for x
    x = 91,028,037,979.61/426,683.47
  6. Step 6: Final answer
    x = 213,338.56

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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.