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Finding the Fourth Proportional to 388,069.46, 535,535.01 and 218,303.59

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Solution

The fourth proportional to 388,069.46, 535,535.01 and 218,303.59 is: 301,258.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,069.46 : 535,535.01 = 218,303.59 : x
  2. Step 2: Convert to fraction form
    388,069.46/535,535.01 = 218,303.59/x
  3. Step 3: Cross multiply
    388,069.46x = 535,535.01 × 218,303.59
  4. Step 4: Simplify right side
    388,069.46x = 116,909,212,576.01
  5. Step 5: Solve for x
    x = 116,909,212,576.01/388,069.46
  6. Step 6: Final answer
    x = 301,258.47

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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.