Home / 260,331.29-390,051.16-142,085.60

Finding the Fourth Proportional to 260,331.29, 390,051.16 and 142,085.60

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Solution

The fourth proportional to 260,331.29, 390,051.16 and 142,085.60 is: 212,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,331.29 : 390,051.16 = 142,085.60 : x
  2. Step 2: Convert to fraction form
    260,331.29/390,051.16 = 142,085.60/x
  3. Step 3: Cross multiply
    260,331.29x = 390,051.16 × 142,085.60
  4. Step 4: Simplify right side
    260,331.29x = 55,420,653,099.30
  5. Step 5: Solve for x
    x = 55,420,653,099.30/260,331.29
  6. Step 6: Final answer
    x = 212,885.10

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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.