Home / 423,039.50-634,725.40-186,216.15

Finding the Fourth Proportional to 423,039.50, 634,725.40 and 186,216.15

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Solution

The fourth proportional to 423,039.50, 634,725.40 and 186,216.15 is: 279,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,039.50 : 634,725.40 = 186,216.15 : x
  2. Step 2: Convert to fraction form
    423,039.50/634,725.40 = 186,216.15/x
  3. Step 3: Cross multiply
    423,039.50x = 634,725.40 × 186,216.15
  4. Step 4: Simplify right side
    423,039.50x = 118,196,120,295.21
  5. Step 5: Solve for x
    x = 118,196,120,295.21/423,039.50
  6. Step 6: Final answer
    x = 279,397.36

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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.