Home / 420,860.14-631,541.73-154,647.56

Finding the Fourth Proportional to 420,860.14, 631,541.73 and 154,647.56

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Solution

The fourth proportional to 420,860.14, 631,541.73 and 154,647.56 is: 232,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,860.14 : 631,541.73 = 154,647.56 : x
  2. Step 2: Convert to fraction form
    420,860.14/631,541.73 = 154,647.56/x
  3. Step 3: Cross multiply
    420,860.14x = 631,541.73 × 154,647.56
  4. Step 4: Simplify right side
    420,860.14x = 97,666,389,741.46
  5. Step 5: Solve for x
    x = 97,666,389,741.46/420,860.14
  6. Step 6: Final answer
    x = 232,063.77

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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.