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Finding the Fourth Proportional to 585,980.64, 879,058.68 and 212,091.12

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Solution

The fourth proportional to 585,980.64, 879,058.68 and 212,091.12 is: 318,168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,980.64 : 879,058.68 = 212,091.12 : x
  2. Step 2: Convert to fraction form
    585,980.64/879,058.68 = 212,091.12/x
  3. Step 3: Cross multiply
    585,980.64x = 879,058.68 × 212,091.12
  4. Step 4: Simplify right side
    585,980.64x = 186,440,539,986.92
  5. Step 5: Solve for x
    x = 186,440,539,986.92/585,980.64
  6. Step 6: Final answer
    x = 318,168.43

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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.