Home / 420,865.93-631,550.40-154,653.36

Finding the Fourth Proportional to 420,865.93, 631,550.40 and 154,653.36

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Solution

The fourth proportional to 420,865.93, 631,550.40 and 154,653.36 is: 232,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,865.93 : 631,550.40 = 154,653.36 : x
  2. Step 2: Convert to fraction form
    420,865.93/631,550.40 = 154,653.36/x
  3. Step 3: Cross multiply
    420,865.93x = 631,550.40 × 154,653.36
  4. Step 4: Simplify right side
    420,865.93x = 97,671,391,369.34
  5. Step 5: Solve for x
    x = 97,671,391,369.34/420,865.93
  6. Step 6: Final answer
    x = 232,072.46

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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.