Home / 479,243.12-661,236.63-315,881.52

Finding the Fourth Proportional to 479,243.12, 661,236.63 and 315,881.52

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Solution

The fourth proportional to 479,243.12, 661,236.63 and 315,881.52 is: 435,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,243.12 : 661,236.63 = 315,881.52 : x
  2. Step 2: Convert to fraction form
    479,243.12/661,236.63 = 315,881.52/x
  3. Step 3: Cross multiply
    479,243.12x = 661,236.63 × 315,881.52
  4. Step 4: Simplify right side
    479,243.12x = 208,872,431,764.08
  5. Step 5: Solve for x
    x = 208,872,431,764.08/479,243.12
  6. Step 6: Final answer
    x = 435,838.14

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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.