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Finding the Fourth Proportional to 282,959.68, 390,484.56 and 155,644.96

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Solution

The fourth proportional to 282,959.68, 390,484.56 and 155,644.96 is: 214,790.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,959.68 : 390,484.56 = 155,644.96 : x
  2. Step 2: Convert to fraction form
    282,959.68/390,484.56 = 155,644.96/x
  3. Step 3: Cross multiply
    282,959.68x = 390,484.56 × 155,644.96
  4. Step 4: Simplify right side
    282,959.68x = 60,776,953,721.82
  5. Step 5: Solve for x
    x = 60,776,953,721.82/282,959.68
  6. Step 6: Final answer
    x = 214,790.16

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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.