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Finding the Fourth Proportional to 257,641.75, 355,545.62 and 144,464.50

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Solution

The fourth proportional to 257,641.75, 355,545.62 and 144,464.50 is: 199,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,641.75 : 355,545.62 = 144,464.50 : x
  2. Step 2: Convert to fraction form
    257,641.75/355,545.62 = 144,464.50/x
  3. Step 3: Cross multiply
    257,641.75x = 355,545.62 × 144,464.50
  4. Step 4: Simplify right side
    257,641.75x = 51,363,720,220.49
  5. Step 5: Solve for x
    x = 51,363,720,220.49/257,641.75
  6. Step 6: Final answer
    x = 199,361.01

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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.