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Finding the Fourth Proportional to 202,242.60, 303,558.30 and 102,515.40

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Solution

The fourth proportional to 202,242.60, 303,558.30 and 102,515.40 is: 153,871.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,242.60 : 303,558.30 = 102,515.40 : x
  2. Step 2: Convert to fraction form
    202,242.60/303,558.30 = 102,515.40/x
  3. Step 3: Cross multiply
    202,242.60x = 303,558.30 × 102,515.40
  4. Step 4: Simplify right side
    202,242.60x = 31,119,400,547.82
  5. Step 5: Solve for x
    x = 31,119,400,547.82/202,242.60
  6. Step 6: Final answer
    x = 153,871.64

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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.