Home / 640,534.94-960,902.03-213,938.72

Finding the Fourth Proportional to 640,534.94, 960,902.03 and 213,938.72

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Solution

The fourth proportional to 640,534.94, 960,902.03 and 213,938.72 is: 320,941.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,534.94 : 960,902.03 = 213,938.72 : x
  2. Step 2: Convert to fraction form
    640,534.94/960,902.03 = 213,938.72/x
  3. Step 3: Cross multiply
    640,534.94x = 960,902.03 × 213,938.72
  4. Step 4: Simplify right side
    640,534.94x = 205,574,145,539.09
  5. Step 5: Solve for x
    x = 205,574,145,539.09/640,534.94
  6. Step 6: Final answer
    x = 320,941.35

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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.