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Finding the Fourth Proportional to 257,640.60, 355,544.18 and 157,038.60

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Solution

The fourth proportional to 257,640.60, 355,544.18 and 157,038.60 is: 216,713.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,640.60 : 355,544.18 = 157,038.60 : x
  2. Step 2: Convert to fraction form
    257,640.60/355,544.18 = 157,038.60/x
  3. Step 3: Cross multiply
    257,640.60x = 355,544.18 × 157,038.60
  4. Step 4: Simplify right side
    257,640.60x = 55,834,160,265.35
  5. Step 5: Solve for x
    x = 55,834,160,265.35/257,640.60
  6. Step 6: Final answer
    x = 216,713.36

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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.