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Finding the Fourth Proportional to 388,635.73, 536,303.15 and 216,544.80

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Solution

The fourth proportional to 388,635.73, 536,303.15 and 216,544.80 is: 298,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,635.73 : 536,303.15 = 216,544.80 : x
  2. Step 2: Convert to fraction form
    388,635.73/536,303.15 = 216,544.80/x
  3. Step 3: Cross multiply
    388,635.73x = 536,303.15 × 216,544.80
  4. Step 4: Simplify right side
    388,635.73x = 116,133,657,273.40
  5. Step 5: Solve for x
    x = 116,133,657,273.40/388,635.73
  6. Step 6: Final answer
    x = 298,823.93

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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.