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Finding the Fourth Proportional to 307,641.51, 424,544.49 and 171,667.35

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Solution

The fourth proportional to 307,641.51, 424,544.49 and 171,667.35 is: 236,900.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,641.51 : 424,544.49 = 171,667.35 : x
  2. Step 2: Convert to fraction form
    307,641.51/424,544.49 = 171,667.35/x
  3. Step 3: Cross multiply
    307,641.51x = 424,544.49 × 171,667.35
  4. Step 4: Simplify right side
    307,641.51x = 72,880,427,555.40
  5. Step 5: Solve for x
    x = 72,880,427,555.40/307,641.51
  6. Step 6: Final answer
    x = 236,900.50

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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.