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Finding the Fourth Proportional to 282,885.89, 390,392.93 and 155,573.33

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Solution

The fourth proportional to 282,885.89, 390,392.93 and 155,573.33 is: 214,696.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,885.89 : 390,392.93 = 155,573.33 : x
  2. Step 2: Convert to fraction form
    282,885.89/390,392.93 = 155,573.33/x
  3. Step 3: Cross multiply
    282,885.89x = 390,392.93 × 155,573.33
  4. Step 4: Simplify right side
    282,885.89x = 60,734,726,565.53
  5. Step 5: Solve for x
    x = 60,734,726,565.53/282,885.89
  6. Step 6: Final answer
    x = 214,696.91

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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.