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Finding the Fourth Proportional to 418,145.96, 628,025.88 and 358,309.64

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Solution

The fourth proportional to 418,145.96, 628,025.88 and 358,309.64 is: 538,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,145.96 : 628,025.88 = 358,309.64 : x
  2. Step 2: Convert to fraction form
    418,145.96/628,025.88 = 358,309.64/x
  3. Step 3: Cross multiply
    418,145.96x = 628,025.88 × 358,309.64
  4. Step 4: Simplify right side
    418,145.96x = 225,027,726,973.48
  5. Step 5: Solve for x
    x = 225,027,726,973.48/418,145.96
  6. Step 6: Final answer
    x = 538,155.93

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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.