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Finding the Third Proportional to 160,220 and 249,078

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Solution

The third proportional to 160,220 and 249,078 is: 387,216.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,220 : 249,078 = 249,078 : x
  2. Step 2: Convert to fraction form
    160,220/249,078 = 249,078/x
  3. Step 3: Cross multiply
    160,220x = 249,078 × 249,078
  4. Step 4: Simplify right side
    160,220x = 62,039,850,084
  5. Step 5: Solve for x
    x = 62,039,850,084/160,220
  6. Step 6: Final answer
    x = 387,216.64

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.