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Finding the Fourth Proportional to 371,403.60, 512,539.11 and 218,448.27

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Solution

The fourth proportional to 371,403.60, 512,539.11 and 218,448.27 is: 301,459.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,403.60 : 512,539.11 = 218,448.27 : x
  2. Step 2: Convert to fraction form
    371,403.60/512,539.11 = 218,448.27/x
  3. Step 3: Cross multiply
    371,403.60x = 512,539.11 × 218,448.27
  4. Step 4: Simplify right side
    371,403.60x = 111,963,281,886.84
  5. Step 5: Solve for x
    x = 111,963,281,886.84/371,403.60
  6. Step 6: Final answer
    x = 301,459.87

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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.