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Finding the Fourth Proportional to 201,007.20, 301,510.80 and 122,145.60

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Solution

The fourth proportional to 201,007.20, 301,510.80 and 122,145.60 is: 183,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,007.20 : 301,510.80 = 122,145.60 : x
  2. Step 2: Convert to fraction form
    201,007.20/301,510.80 = 122,145.60/x
  3. Step 3: Cross multiply
    201,007.20x = 301,510.80 × 122,145.60
  4. Step 4: Simplify right side
    201,007.20x = 36,828,217,572.48
  5. Step 5: Solve for x
    x = 36,828,217,572.48/201,007.20
  6. Step 6: Final answer
    x = 183,218.40

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1.5x scale

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.