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Finding the Fourth Proportional to 316,490.85, 436,762.18 and 173,264.22

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Solution

The fourth proportional to 316,490.85, 436,762.18 and 173,264.22 is: 239,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,490.85 : 436,762.18 = 173,264.22 : x
  2. Step 2: Convert to fraction form
    316,490.85/436,762.18 = 173,264.22/x
  3. Step 3: Cross multiply
    316,490.85x = 436,762.18 × 173,264.22
  4. Step 4: Simplify right side
    316,490.85x = 75,675,258,443.20
  5. Step 5: Solve for x
    x = 75,675,258,443.20/316,490.85
  6. Step 6: Final answer
    x = 239,107.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.