Home / 250,428.90-345,711.57-142,978.19

Finding the Fourth Proportional to 250,428.90, 345,711.57 and 142,978.19

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Solution

The fourth proportional to 250,428.90, 345,711.57 and 142,978.19 is: 197,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,428.90 : 345,711.57 = 142,978.19 : x
  2. Step 2: Convert to fraction form
    250,428.90/345,711.57 = 142,978.19/x
  3. Step 3: Cross multiply
    250,428.90x = 345,711.57 × 142,978.19
  4. Step 4: Simplify right side
    250,428.90x = 49,429,212,812.10
  5. Step 5: Solve for x
    x = 49,429,212,812.10/250,428.90
  6. Step 6: Final answer
    x = 197,378.23

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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.