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Finding the Fourth Proportional to 276,307.40, 381,303.63 and 155,448.77

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Solution

The fourth proportional to 276,307.40, 381,303.63 and 155,448.77 is: 214,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,307.40 : 381,303.63 = 155,448.77 : x
  2. Step 2: Convert to fraction form
    276,307.40/381,303.63 = 155,448.77/x
  3. Step 3: Cross multiply
    276,307.40x = 381,303.63 × 155,448.77
  4. Step 4: Simplify right side
    276,307.40x = 59,273,180,289.46
  5. Step 5: Solve for x
    x = 59,273,180,289.46/276,307.40
  6. Step 6: Final answer
    x = 214,518.97

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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.