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Finding the Fourth Proportional to 478,184.40, 717,108.96 and 141,135.12

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Solution

The fourth proportional to 478,184.40, 717,108.96 and 141,135.12 is: 211,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,184.40 : 717,108.96 = 141,135.12 : x
  2. Step 2: Convert to fraction form
    478,184.40/717,108.96 = 141,135.12/x
  3. Step 3: Cross multiply
    478,184.40x = 717,108.96 × 141,135.12
  4. Step 4: Simplify right side
    478,184.40x = 101,209,259,122.68
  5. Step 5: Solve for x
    x = 101,209,259,122.68/478,184.40
  6. Step 6: Final answer
    x = 211,653.20

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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.