Home / 260,427.16-390,689.40-118,282.36

Finding the Fourth Proportional to 260,427.16, 390,689.40 and 118,282.36

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Solution

The fourth proportional to 260,427.16, 390,689.40 and 118,282.36 is: 177,445.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,427.16 : 390,689.40 = 118,282.36 : x
  2. Step 2: Convert to fraction form
    260,427.16/390,689.40 = 118,282.36/x
  3. Step 3: Cross multiply
    260,427.16x = 390,689.40 × 118,282.36
  4. Step 4: Simplify right side
    260,427.16x = 46,211,664,258.98
  5. Step 5: Solve for x
    x = 46,211,664,258.98/260,427.16
  6. Step 6: Final answer
    x = 177,445.64

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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.