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Finding the Fourth Proportional to 640,759.68, 961,106.22 and 191,484.18

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Solution

The fourth proportional to 640,759.68, 961,106.22 and 191,484.18 is: 287,216.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,759.68 : 961,106.22 = 191,484.18 : x
  2. Step 2: Convert to fraction form
    640,759.68/961,106.22 = 191,484.18/x
  3. Step 3: Cross multiply
    640,759.68x = 961,106.22 × 191,484.18
  4. Step 4: Simplify right side
    640,759.68x = 184,036,636,429.60
  5. Step 5: Solve for x
    x = 184,036,636,429.60/640,759.68
  6. Step 6: Final answer
    x = 287,216.32

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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.