Home / 478,212.48-659,935.20-274,271.28

Finding the Fourth Proportional to 478,212.48, 659,935.20 and 274,271.28

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Solution

The fourth proportional to 478,212.48, 659,935.20 and 274,271.28 is: 378,495.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,212.48 : 659,935.20 = 274,271.28 : x
  2. Step 2: Convert to fraction form
    478,212.48/659,935.20 = 274,271.28/x
  3. Step 3: Cross multiply
    478,212.48x = 659,935.20 × 274,271.28
  4. Step 4: Simplify right side
    478,212.48x = 181,001,272,021.06
  5. Step 5: Solve for x
    x = 181,001,272,021.06/478,212.48
  6. Step 6: Final answer
    x = 378,495.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.