Home / 430,719.48-646,223.09-190,800.79

Finding the Fourth Proportional to 430,719.48, 646,223.09 and 190,800.79

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Solution

The fourth proportional to 430,719.48, 646,223.09 and 190,800.79 is: 286,264.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,719.48 : 646,223.09 = 190,800.79 : x
  2. Step 2: Convert to fraction form
    430,719.48/646,223.09 = 190,800.79/x
  3. Step 3: Cross multiply
    430,719.48x = 646,223.09 × 190,800.79
  4. Step 4: Simplify right side
    430,719.48x = 123,299,873,518.68
  5. Step 5: Solve for x
    x = 123,299,873,518.68/430,719.48
  6. Step 6: Final answer
    x = 286,264.91

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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.