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Finding the Fourth Proportional to 257,292.72, 355,237.22 and 160,643.72

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Solution

The fourth proportional to 257,292.72, 355,237.22 and 160,643.72 is: 221,796.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,292.72 : 355,237.22 = 160,643.72 : x
  2. Step 2: Convert to fraction form
    257,292.72/355,237.22 = 160,643.72/x
  3. Step 3: Cross multiply
    257,292.72x = 355,237.22 × 160,643.72
  4. Step 4: Simplify right side
    257,292.72x = 57,066,629,792.96
  5. Step 5: Solve for x
    x = 57,066,629,792.96/257,292.72
  6. Step 6: Final answer
    x = 221,796.52

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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.