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Finding the Fourth Proportional to 262,915.20, 393,465.60 and 157,809.60

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Solution

The fourth proportional to 262,915.20, 393,465.60 and 157,809.60 is: 236,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,915.20 : 393,465.60 = 157,809.60 : x
  2. Step 2: Convert to fraction form
    262,915.20/393,465.60 = 157,809.60/x
  3. Step 3: Cross multiply
    262,915.20x = 393,465.60 × 157,809.60
  4. Step 4: Simplify right side
    262,915.20x = 62,092,648,949.76
  5. Step 5: Solve for x
    x = 62,092,648,949.76/262,915.20
  6. Step 6: Final answer
    x = 236,169.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.