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Finding the Fourth Proportional to 297,058.60, 445,652.70 and 86,679.40

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Solution

The fourth proportional to 297,058.60, 445,652.70 and 86,679.40 is: 130,038.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,058.60 : 445,652.70 = 86,679.40 : x
  2. Step 2: Convert to fraction form
    297,058.60/445,652.70 = 86,679.40/x
  3. Step 3: Cross multiply
    297,058.60x = 445,652.70 × 86,679.40
  4. Step 4: Simplify right side
    297,058.60x = 38,628,908,644.38
  5. Step 5: Solve for x
    x = 38,628,908,644.38/297,058.60
  6. Step 6: Final answer
    x = 130,038.01

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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.