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Finding the Fourth Proportional to 260,338.51, 390,103.85 and 180,532.14

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Solution

The fourth proportional to 260,338.51, 390,103.85 and 180,532.14 is: 270,518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,338.51 : 390,103.85 = 180,532.14 : x
  2. Step 2: Convert to fraction form
    260,338.51/390,103.85 = 180,532.14/x
  3. Step 3: Cross multiply
    260,338.51x = 390,103.85 × 180,532.14
  4. Step 4: Simplify right side
    260,338.51x = 70,426,283,030.02
  5. Step 5: Solve for x
    x = 70,426,283,030.02/260,338.51
  6. Step 6: Final answer
    x = 270,518.12

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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.