Home / 420,419.14-630,323.21-167,623.81

Finding the Fourth Proportional to 420,419.14, 630,323.21 and 167,623.81

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Solution

The fourth proportional to 420,419.14, 630,323.21 and 167,623.81 is: 251,313.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,419.14 : 630,323.21 = 167,623.81 : x
  2. Step 2: Convert to fraction form
    420,419.14/630,323.21 = 167,623.81/x
  3. Step 3: Cross multiply
    420,419.14x = 630,323.21 × 167,623.81
  4. Step 4: Simplify right side
    420,419.14x = 105,657,178,410.69
  5. Step 5: Solve for x
    x = 105,657,178,410.69/420,419.14
  6. Step 6: Final answer
    x = 251,313.91

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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.