Home / 420,942.94-631,663.52-154,890.28

Finding the Fourth Proportional to 420,942.94, 631,663.52 and 154,890.28

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Solution

The fourth proportional to 420,942.94, 631,663.52 and 154,890.28 is: 232,427.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,942.94 : 631,663.52 = 154,890.28 : x
  2. Step 2: Convert to fraction form
    420,942.94/631,663.52 = 154,890.28/x
  3. Step 3: Cross multiply
    420,942.94x = 631,663.52 × 154,890.28
  4. Step 4: Simplify right side
    420,942.94x = 97,838,539,478.59
  5. Step 5: Solve for x
    x = 97,838,539,478.59/420,942.94
  6. Step 6: Final answer
    x = 232,427.08

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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.