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Finding the Fourth Proportional to 282,567.42, 389,929.75 and 155,240.28

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Solution

The fourth proportional to 282,567.42, 389,929.75 and 155,240.28 is: 214,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,567.42 : 389,929.75 = 155,240.28 : x
  2. Step 2: Convert to fraction form
    282,567.42/389,929.75 = 155,240.28/x
  3. Step 3: Cross multiply
    282,567.42x = 389,929.75 × 155,240.28
  4. Step 4: Simplify right side
    282,567.42x = 60,532,803,182.23
  5. Step 5: Solve for x
    x = 60,532,803,182.23/282,567.42
  6. Step 6: Final answer
    x = 214,224.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.