Home / 430,761.51-646,142.09-115,210.22

Finding the Fourth Proportional to 430,761.51, 646,142.09 and 115,210.22

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Solution

The fourth proportional to 430,761.51, 646,142.09 and 115,210.22 is: 172,815.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,761.51 : 646,142.09 = 115,210.22 : x
  2. Step 2: Convert to fraction form
    430,761.51/646,142.09 = 115,210.22/x
  3. Step 3: Cross multiply
    430,761.51x = 646,142.09 × 115,210.22
  4. Step 4: Simplify right side
    430,761.51x = 74,442,168,533.40
  5. Step 5: Solve for x
    x = 74,442,168,533.40/430,761.51
  6. Step 6: Final answer
    x = 172,815.27

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1.5x scale

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.