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Finding the Fourth Proportional to 276,838.40, 415,718.40 and 152,268.80

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Solution

The fourth proportional to 276,838.40, 415,718.40 and 152,268.80 is: 228,656.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,838.40 : 415,718.40 = 152,268.80 : x
  2. Step 2: Convert to fraction form
    276,838.40/415,718.40 = 152,268.80/x
  3. Step 3: Cross multiply
    276,838.40x = 415,718.40 × 152,268.80
  4. Step 4: Simplify right side
    276,838.40x = 63,300,941,905.92
  5. Step 5: Solve for x
    x = 63,300,941,905.92/276,838.40
  6. Step 6: Final answer
    x = 228,656.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.