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Finding the Fourth Proportional to 282,863.02, 390,340.35 and 155,531.02

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Solution

The fourth proportional to 282,863.02, 390,340.35 and 155,531.02 is: 214,626.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,863.02 : 390,340.35 = 155,531.02 : x
  2. Step 2: Convert to fraction form
    282,863.02/390,340.35 = 155,531.02/x
  3. Step 3: Cross multiply
    282,863.02x = 390,340.35 × 155,531.02
  4. Step 4: Simplify right side
    282,863.02x = 60,710,032,782.66
  5. Step 5: Solve for x
    x = 60,710,032,782.66/282,863.02
  6. Step 6: Final answer
    x = 214,626.97

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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.