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Finding the Fourth Proportional to 352,308.48, 486,153.60 and 209,043.84

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Solution

The fourth proportional to 352,308.48, 486,153.60 and 209,043.84 is: 288,461.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,308.48 : 486,153.60 = 209,043.84 : x
  2. Step 2: Convert to fraction form
    352,308.48/486,153.60 = 209,043.84/x
  3. Step 3: Cross multiply
    352,308.48x = 486,153.60 × 209,043.84
  4. Step 4: Simplify right side
    352,308.48x = 101,627,415,373.82
  5. Step 5: Solve for x
    x = 101,627,415,373.82/352,308.48
  6. Step 6: Final answer
    x = 288,461.45

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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.