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Finding the Fourth Proportional to 297,438.78, 446,158.16 and 87,076.72

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Solution

The fourth proportional to 297,438.78, 446,158.16 and 87,076.72 is: 130,615.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,438.78 : 446,158.16 = 87,076.72 : x
  2. Step 2: Convert to fraction form
    297,438.78/446,158.16 = 87,076.72/x
  3. Step 3: Cross multiply
    297,438.78x = 446,158.16 × 87,076.72
  4. Step 4: Simplify right side
    297,438.78x = 38,849,989,174.04
  5. Step 5: Solve for x
    x = 38,849,989,174.04/297,438.78
  6. Step 6: Final answer
    x = 130,615.08

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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.