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Finding the Fourth Proportional to 221,971.55, 333,006.63 and 103,578.30

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Solution

The fourth proportional to 221,971.55, 333,006.63 and 103,578.30 is: 155,390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,971.55 : 333,006.63 = 103,578.30 : x
  2. Step 2: Convert to fraction form
    221,971.55/333,006.63 = 103,578.30/x
  3. Step 3: Cross multiply
    221,971.55x = 333,006.63 × 103,578.30
  4. Step 4: Simplify right side
    221,971.55x = 34,492,260,235.71
  5. Step 5: Solve for x
    x = 34,492,260,235.71/221,971.55
  6. Step 6: Final answer
    x = 155,390.46

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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.