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Finding the Fourth Proportional to 402,653.20, 604,052.70 and 202,469.80

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Solution

The fourth proportional to 402,653.20, 604,052.70 and 202,469.80 is: 303,741.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,653.20 : 604,052.70 = 202,469.80 : x
  2. Step 2: Convert to fraction form
    402,653.20/604,052.70 = 202,469.80/x
  3. Step 3: Cross multiply
    402,653.20x = 604,052.70 × 202,469.80
  4. Step 4: Simplify right side
    402,653.20x = 122,302,429,358.46
  5. Step 5: Solve for x
    x = 122,302,429,358.46/402,653.20
  6. Step 6: Final answer
    x = 303,741.36

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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.