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Finding the Fourth Proportional to 352,274.40, 486,483.78 and 243,656.88

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Solution

The fourth proportional to 352,274.40, 486,483.78 and 243,656.88 is: 336,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,274.40 : 486,483.78 = 243,656.88 : x
  2. Step 2: Convert to fraction form
    352,274.40/486,483.78 = 243,656.88/x
  3. Step 3: Cross multiply
    352,274.40x = 486,483.78 × 243,656.88
  4. Step 4: Simplify right side
    352,274.40x = 118,535,120,005.41
  5. Step 5: Solve for x
    x = 118,535,120,005.41/352,274.40
  6. Step 6: Final answer
    x = 336,485.19

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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.