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Finding the Fourth Proportional to 282,903.66, 390,399.27 and 155,579.26

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Solution

The fourth proportional to 282,903.66, 390,399.27 and 155,579.26 is: 214,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,903.66 : 390,399.27 = 155,579.26 : x
  2. Step 2: Convert to fraction form
    282,903.66/390,399.27 = 155,579.26/x
  3. Step 3: Cross multiply
    282,903.66x = 390,399.27 × 155,579.26
  4. Step 4: Simplify right side
    282,903.66x = 60,738,029,531.14
  5. Step 5: Solve for x
    x = 60,738,029,531.14/282,903.66
  6. Step 6: Final answer
    x = 214,695.10

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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.