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Finding the Fourth Proportional to 446,078.40, 669,052.80 and 130,502.40

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Solution

The fourth proportional to 446,078.40, 669,052.80 and 130,502.40 is: 195,734.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,078.40 : 669,052.80 = 130,502.40 : x
  2. Step 2: Convert to fraction form
    446,078.40/669,052.80 = 130,502.40/x
  3. Step 3: Cross multiply
    446,078.40x = 669,052.80 × 130,502.40
  4. Step 4: Simplify right side
    446,078.40x = 87,312,996,126.72
  5. Step 5: Solve for x
    x = 87,312,996,126.72/446,078.40
  6. Step 6: Final answer
    x = 195,734.64

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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.