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Finding the Fourth Proportional to 620,963.59, 931,417.42 and 216,441.03

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Solution

The fourth proportional to 620,963.59, 931,417.42 and 216,441.03 is: 324,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,963.59 : 931,417.42 = 216,441.03 : x
  2. Step 2: Convert to fraction form
    620,963.59/931,417.42 = 216,441.03/x
  3. Step 3: Cross multiply
    620,963.59x = 931,417.42 × 216,441.03
  4. Step 4: Simplify right side
    620,963.59x = 201,596,945,744.74
  5. Step 5: Solve for x
    x = 201,596,945,744.74/620,963.59
  6. Step 6: Final answer
    x = 324,651.80

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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.