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Finding the Fourth Proportional to 219,007.80, 328,511.70 and 180,127.80

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Solution

The fourth proportional to 219,007.80, 328,511.70 and 180,127.80 is: 270,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,007.80 : 328,511.70 = 180,127.80 : x
  2. Step 2: Convert to fraction form
    219,007.80/328,511.70 = 180,127.80/x
  3. Step 3: Cross multiply
    219,007.80x = 328,511.70 × 180,127.80
  4. Step 4: Simplify right side
    219,007.80x = 59,174,089,795.26
  5. Step 5: Solve for x
    x = 59,174,089,795.26/219,007.80
  6. Step 6: Final answer
    x = 270,191.70

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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.