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Finding the Fourth Proportional to 478,037.64, 717,179.76 and 141,064.68

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Solution

The fourth proportional to 478,037.64, 717,179.76 and 141,064.68 is: 211,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,037.64 : 717,179.76 = 141,064.68 : x
  2. Step 2: Convert to fraction form
    478,037.64/717,179.76 = 141,064.68/x
  3. Step 3: Cross multiply
    478,037.64x = 717,179.76 × 141,064.68
  4. Step 4: Simplify right side
    478,037.64x = 101,168,733,346.88
  5. Step 5: Solve for x
    x = 101,168,733,346.88/478,037.64
  6. Step 6: Final answer
    x = 211,633.40

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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.