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Finding the Fourth Proportional to 260,611.50, 390,918.06 and 63,619.50

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Solution

The fourth proportional to 260,611.50, 390,918.06 and 63,619.50 is: 95,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,611.50 : 390,918.06 = 63,619.50 : x
  2. Step 2: Convert to fraction form
    260,611.50/390,918.06 = 63,619.50/x
  3. Step 3: Cross multiply
    260,611.50x = 390,918.06 × 63,619.50
  4. Step 4: Simplify right side
    260,611.50x = 24,870,011,518.17
  5. Step 5: Solve for x
    x = 24,870,011,518.17/260,611.50
  6. Step 6: Final answer
    x = 95,429.45

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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.