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Finding the Fourth Proportional to 260,095.80, 390,065.94 and 135,368.76

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Solution

The fourth proportional to 260,095.80, 390,065.94 and 135,368.76 is: 203,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,095.80 : 390,065.94 = 135,368.76 : x
  2. Step 2: Convert to fraction form
    260,095.80/390,065.94 = 135,368.76/x
  3. Step 3: Cross multiply
    260,095.80x = 390,065.94 × 135,368.76
  4. Step 4: Simplify right side
    260,095.80x = 52,802,742,616.03
  5. Step 5: Solve for x
    x = 52,802,742,616.03/260,095.80
  6. Step 6: Final answer
    x = 203,012.67

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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.