Home / 423,083.60-634,625.40-142,571.60

Finding the Fourth Proportional to 423,083.60, 634,625.40 and 142,571.60

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Solution

The fourth proportional to 423,083.60, 634,625.40 and 142,571.60 is: 213,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,083.60 : 634,625.40 = 142,571.60 : x
  2. Step 2: Convert to fraction form
    423,083.60/634,625.40 = 142,571.60/x
  3. Step 3: Cross multiply
    423,083.60x = 634,625.40 × 142,571.60
  4. Step 4: Simplify right side
    423,083.60x = 90,479,558,678.64
  5. Step 5: Solve for x
    x = 90,479,558,678.64/423,083.60
  6. Step 6: Final answer
    x = 213,857.40

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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.