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Finding the Fourth Proportional to 455,218.40, 682,762.80 and 155,712.80

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Solution

The fourth proportional to 455,218.40, 682,762.80 and 155,712.80 is: 233,547.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,218.40 : 682,762.80 = 155,712.80 : x
  2. Step 2: Convert to fraction form
    455,218.40/682,762.80 = 155,712.80/x
  3. Step 3: Cross multiply
    455,218.40x = 682,762.80 × 155,712.80
  4. Step 4: Simplify right side
    455,218.40x = 106,314,907,323.84
  5. Step 5: Solve for x
    x = 106,314,907,323.84/455,218.40
  6. Step 6: Final answer
    x = 233,547.03

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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.