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Finding the Fourth Proportional to 260,420.94, 359,391.12 and 152,990.03

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Solution

The fourth proportional to 260,420.94, 359,391.12 and 152,990.03 is: 211,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,420.94 : 359,391.12 = 152,990.03 : x
  2. Step 2: Convert to fraction form
    260,420.94/359,391.12 = 152,990.03/x
  3. Step 3: Cross multiply
    260,420.94x = 359,391.12 × 152,990.03
  4. Step 4: Simplify right side
    260,420.94x = 54,983,256,433.58
  5. Step 5: Solve for x
    x = 54,983,256,433.58/260,420.94
  6. Step 6: Final answer
    x = 211,132.24

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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.