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Finding the Fourth Proportional to 282,443.67, 389,780.28 and 155,127.51

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Solution

The fourth proportional to 282,443.67, 389,780.28 and 155,127.51 is: 214,080.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,443.67 : 389,780.28 = 155,127.51 : x
  2. Step 2: Convert to fraction form
    282,443.67/389,780.28 = 155,127.51/x
  3. Step 3: Cross multiply
    282,443.67x = 389,780.28 × 155,127.51
  4. Step 4: Simplify right side
    282,443.67x = 60,465,644,283.50
  5. Step 5: Solve for x
    x = 60,465,644,283.50/282,443.67
  6. Step 6: Final answer
    x = 214,080.37

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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.