Home / 420,448.80-630,298.22-154,147.26

Finding the Fourth Proportional to 420,448.80, 630,298.22 and 154,147.26

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Solution

The fourth proportional to 420,448.80, 630,298.22 and 154,147.26 is: 231,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,448.80 : 630,298.22 = 154,147.26 : x
  2. Step 2: Convert to fraction form
    420,448.80/630,298.22 = 154,147.26/x
  3. Step 3: Cross multiply
    420,448.80x = 630,298.22 × 154,147.26
  4. Step 4: Simplify right side
    420,448.80x = 97,158,742,825.14
  5. Step 5: Solve for x
    x = 97,158,742,825.14/420,448.80
  6. Step 6: Final answer
    x = 231,083.41

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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.