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Finding the Fourth Proportional to 320,244.79, 479,978.76 and 235,216.53

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Solution

The fourth proportional to 320,244.79, 479,978.76 and 235,216.53 is: 352,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,244.79 : 479,978.76 = 235,216.53 : x
  2. Step 2: Convert to fraction form
    320,244.79/479,978.76 = 235,216.53/x
  3. Step 3: Cross multiply
    320,244.79x = 479,978.76 × 235,216.53
  4. Step 4: Simplify right side
    320,244.79x = 112,898,938,400.90
  5. Step 5: Solve for x
    x = 112,898,938,400.90/320,244.79
  6. Step 6: Final answer
    x = 352,539.50

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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.