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Finding the Fourth Proportional to 320,239.54, 479,970.90 and 235,211.28

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Solution

The fourth proportional to 320,239.54, 479,970.90 and 235,211.28 is: 352,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,239.54 : 479,970.90 = 235,211.28 : x
  2. Step 2: Convert to fraction form
    320,239.54/479,970.90 = 235,211.28/x
  3. Step 3: Cross multiply
    320,239.54x = 479,970.90 × 235,211.28
  4. Step 4: Simplify right side
    320,239.54x = 112,894,569,751.75
  5. Step 5: Solve for x
    x = 112,894,569,751.75/320,239.54
  6. Step 6: Final answer
    x = 352,531.64

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1.5x scale

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.