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Finding the Fourth Proportional to 260,511.30, 390,766.95 and 127,476.90

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Solution

The fourth proportional to 260,511.30, 390,766.95 and 127,476.90 is: 191,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,511.30 : 390,766.95 = 127,476.90 : x
  2. Step 2: Convert to fraction form
    260,511.30/390,766.95 = 127,476.90/x
  3. Step 3: Cross multiply
    260,511.30x = 390,766.95 × 127,476.90
  4. Step 4: Simplify right side
    260,511.30x = 49,813,759,408.46
  5. Step 5: Solve for x
    x = 49,813,759,408.46/260,511.30
  6. Step 6: Final answer
    x = 191,215.35

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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.