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Finding the Fourth Proportional to 249,817.75, 344,739.93 and 142,422.40

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Solution

The fourth proportional to 249,817.75, 344,739.93 and 142,422.40 is: 196,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,817.75 : 344,739.93 = 142,422.40 : x
  2. Step 2: Convert to fraction form
    249,817.75/344,739.93 = 142,422.40/x
  3. Step 3: Cross multiply
    249,817.75x = 344,739.93 × 142,422.40
  4. Step 4: Simplify right side
    249,817.75x = 49,098,688,206.43
  5. Step 5: Solve for x
    x = 49,098,688,206.43/249,817.75
  6. Step 6: Final answer
    x = 196,538.03

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1.5x scale

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.