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Finding the Fourth Proportional to 478,302.71, 717,495.37 and 123,313.73

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Solution

The fourth proportional to 478,302.71, 717,495.37 and 123,313.73 is: 184,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,302.71 : 717,495.37 = 123,313.73 : x
  2. Step 2: Convert to fraction form
    478,302.71/717,495.37 = 123,313.73/x
  3. Step 3: Cross multiply
    478,302.71x = 717,495.37 × 123,313.73
  4. Step 4: Simplify right side
    478,302.71x = 88,477,031,817.88
  5. Step 5: Solve for x
    x = 88,477,031,817.88/478,302.71
  6. Step 6: Final answer
    x = 184,981.25

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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.