Home / 260,088.40-390,147.64-73,114.32

Finding the Fourth Proportional to 260,088.40, 390,147.64 and 73,114.32

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Solution

The fourth proportional to 260,088.40, 390,147.64 and 73,114.32 is: 109,675.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,088.40 : 390,147.64 = 73,114.32 : x
  2. Step 2: Convert to fraction form
    260,088.40/390,147.64 = 73,114.32/x
  3. Step 3: Cross multiply
    260,088.40x = 390,147.64 × 73,114.32
  4. Step 4: Simplify right side
    260,088.40x = 28,525,379,398.20
  5. Step 5: Solve for x
    x = 28,525,379,398.20/260,088.40
  6. Step 6: Final answer
    x = 109,675.71

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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.