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Finding the Fourth Proportional to 478,649.76, 718,074.24 and 141,663.84

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Solution

The fourth proportional to 478,649.76, 718,074.24 and 141,663.84 is: 212,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,649.76 : 718,074.24 = 141,663.84 : x
  2. Step 2: Convert to fraction form
    478,649.76/718,074.24 = 141,663.84/x
  3. Step 3: Cross multiply
    478,649.76x = 718,074.24 × 141,663.84
  4. Step 4: Simplify right side
    478,649.76x = 101,725,154,243.48
  5. Step 5: Solve for x
    x = 101,725,154,243.48/478,649.76
  6. Step 6: Final answer
    x = 212,525.24

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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.