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Finding the Fourth Proportional to 259,007.60, 388,511.40 and 153,772.40

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Solution

The fourth proportional to 259,007.60, 388,511.40 and 153,772.40 is: 230,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,007.60 : 388,511.40 = 153,772.40 : x
  2. Step 2: Convert to fraction form
    259,007.60/388,511.40 = 153,772.40/x
  3. Step 3: Cross multiply
    259,007.60x = 388,511.40 × 153,772.40
  4. Step 4: Simplify right side
    259,007.60x = 59,742,330,405.36
  5. Step 5: Solve for x
    x = 59,742,330,405.36/259,007.60
  6. Step 6: Final answer
    x = 230,658.60

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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.