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Finding the Fourth Proportional to 423,029.37, 634,710.21 and 186,206.03

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Solution

The fourth proportional to 423,029.37, 634,710.21 and 186,206.03 is: 279,382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,029.37 : 634,710.21 = 186,206.03 : x
  2. Step 2: Convert to fraction form
    423,029.37/634,710.21 = 186,206.03/x
  3. Step 3: Cross multiply
    423,029.37x = 634,710.21 × 186,206.03
  4. Step 4: Simplify right side
    423,029.37x = 118,186,868,404.57
  5. Step 5: Solve for x
    x = 118,186,868,404.57/423,029.37
  6. Step 6: Final answer
    x = 279,382.18

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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.