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Finding the Fourth Proportional to 276,281.37, 381,237.40 and 155,420.16

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Solution

The fourth proportional to 276,281.37, 381,237.40 and 155,420.16 is: 214,462.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,281.37 : 381,237.40 = 155,420.16 : x
  2. Step 2: Convert to fraction form
    276,281.37/381,237.40 = 155,420.16/x
  3. Step 3: Cross multiply
    276,281.37x = 381,237.40 × 155,420.16
  4. Step 4: Simplify right side
    276,281.37x = 59,251,977,705.98
  5. Step 5: Solve for x
    x = 59,251,977,705.98/276,281.37
  6. Step 6: Final answer
    x = 214,462.44

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1.5x scale

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.