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Finding the Fourth Proportional to 228,145.60, 342,315.60 and 143,970.40

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Solution

The fourth proportional to 228,145.60, 342,315.60 and 143,970.40 is: 216,016.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,145.60 : 342,315.60 = 143,970.40 : x
  2. Step 2: Convert to fraction form
    228,145.60/342,315.60 = 143,970.40/x
  3. Step 3: Cross multiply
    228,145.60x = 342,315.60 × 143,970.40
  4. Step 4: Simplify right side
    228,145.60x = 49,283,313,858.24
  5. Step 5: Solve for x
    x = 49,283,313,858.24/228,145.60
  6. Step 6: Final answer
    x = 216,016.94

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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.