Home / 216,681.12-324,666.50-208,376.60

Finding the Fourth Proportional to 216,681.12, 324,666.50 and 208,376.60

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Solution

The fourth proportional to 216,681.12, 324,666.50 and 208,376.60 is: 312,223.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,681.12 : 324,666.50 = 208,376.60 : x
  2. Step 2: Convert to fraction form
    216,681.12/324,666.50 = 208,376.60/x
  3. Step 3: Cross multiply
    216,681.12x = 324,666.50 × 208,376.60
  4. Step 4: Simplify right side
    216,681.12x = 67,652,898,738.68
  5. Step 5: Solve for x
    x = 67,652,898,738.68/216,681.12
  6. Step 6: Final answer
    x = 312,223.32

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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.