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Finding the Fourth Proportional to 282,865.02, 390,343.11 and 155,533.02

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Solution

The fourth proportional to 282,865.02, 390,343.11 and 155,533.02 is: 214,629.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,865.02 : 390,343.11 = 155,533.02 : x
  2. Step 2: Convert to fraction form
    282,865.02/390,343.11 = 155,533.02/x
  3. Step 3: Cross multiply
    282,865.02x = 390,343.11 × 155,533.02
  4. Step 4: Simplify right side
    282,865.02x = 60,711,242,734.49
  5. Step 5: Solve for x
    x = 60,711,242,734.49/282,865.02
  6. Step 6: Final answer
    x = 214,629.73

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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.