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Finding the Fourth Proportional to 455,657.20, 683,485.80 and 265,922.80

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Solution

The fourth proportional to 455,657.20, 683,485.80 and 265,922.80 is: 398,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,657.20 : 683,485.80 = 265,922.80 : x
  2. Step 2: Convert to fraction form
    455,657.20/683,485.80 = 265,922.80/x
  3. Step 3: Cross multiply
    455,657.20x = 683,485.80 × 265,922.80
  4. Step 4: Simplify right side
    455,657.20x = 181,754,457,696.24
  5. Step 5: Solve for x
    x = 181,754,457,696.24/455,657.20
  6. Step 6: Final answer
    x = 398,884.20

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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.