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Finding the Fourth Proportional to 260,317.84, 390,368.60 and 127,159.44

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Solution

The fourth proportional to 260,317.84, 390,368.60 and 127,159.44 is: 190,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,317.84 : 390,368.60 = 127,159.44 : x
  2. Step 2: Convert to fraction form
    260,317.84/390,368.60 = 127,159.44/x
  3. Step 3: Cross multiply
    260,317.84x = 390,368.60 × 127,159.44
  4. Step 4: Simplify right side
    260,317.84x = 49,639,052,569.58
  5. Step 5: Solve for x
    x = 49,639,052,569.58/260,317.84
  6. Step 6: Final answer
    x = 190,686.33

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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.