Home / 302,938.73-454,406.70-78,280.07

Finding the Fourth Proportional to 302,938.73, 454,406.70 and 78,280.07

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Solution

The fourth proportional to 302,938.73, 454,406.70 and 78,280.07 is: 117,419.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,938.73 : 454,406.70 = 78,280.07 : x
  2. Step 2: Convert to fraction form
    302,938.73/454,406.70 = 78,280.07/x
  3. Step 3: Cross multiply
    302,938.73x = 454,406.70 × 78,280.07
  4. Step 4: Simplify right side
    302,938.73x = 35,570,986,012.44
  5. Step 5: Solve for x
    x = 35,570,986,012.44/302,938.73
  6. Step 6: Final answer
    x = 117,419.74

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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.