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Finding the Fourth Proportional to 478,145.10, 716,738.45 and 222,157.51

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Solution

The fourth proportional to 478,145.10, 716,738.45 and 222,157.51 is: 333,013.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,145.10 : 716,738.45 = 222,157.51 : x
  2. Step 2: Convert to fraction form
    478,145.10/716,738.45 = 222,157.51/x
  3. Step 3: Cross multiply
    478,145.10x = 716,738.45 × 222,157.51
  4. Step 4: Simplify right side
    478,145.10x = 159,228,830,054.32
  5. Step 5: Solve for x
    x = 159,228,830,054.32/478,145.10
  6. Step 6: Final answer
    x = 333,013.62

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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.