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Finding the Fourth Proportional to 478,910.22, 718,339.41 and 146,486.22

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Solution

The fourth proportional to 478,910.22, 718,339.41 and 146,486.22 is: 219,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,910.22 : 718,339.41 = 146,486.22 : x
  2. Step 2: Convert to fraction form
    478,910.22/718,339.41 = 146,486.22/x
  3. Step 3: Cross multiply
    478,910.22x = 718,339.41 × 146,486.22
  4. Step 4: Simplify right side
    478,910.22x = 105,226,824,847.93
  5. Step 5: Solve for x
    x = 105,226,824,847.93/478,910.22
  6. Step 6: Final answer
    x = 219,721.40

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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.