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Finding the Fourth Proportional to 205,511.40, 308,267.10 and 158,855.40

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Solution

The fourth proportional to 205,511.40, 308,267.10 and 158,855.40 is: 238,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,511.40 : 308,267.10 = 158,855.40 : x
  2. Step 2: Convert to fraction form
    205,511.40/308,267.10 = 158,855.40/x
  3. Step 3: Cross multiply
    205,511.40x = 308,267.10 × 158,855.40
  4. Step 4: Simplify right side
    205,511.40x = 48,969,893,477.34
  5. Step 5: Solve for x
    x = 48,969,893,477.34/205,511.40
  6. Step 6: Final answer
    x = 238,283.10

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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.