Home / 430,853.74-646,280.10-115,302.43

Finding the Fourth Proportional to 430,853.74, 646,280.10 and 115,302.43

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Solution

The fourth proportional to 430,853.74, 646,280.10 and 115,302.43 is: 172,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,853.74 : 646,280.10 = 115,302.43 : x
  2. Step 2: Convert to fraction form
    430,853.74/646,280.10 = 115,302.43/x
  3. Step 3: Cross multiply
    430,853.74x = 646,280.10 × 115,302.43
  4. Step 4: Simplify right side
    430,853.74x = 74,517,665,990.64
  5. Step 5: Solve for x
    x = 74,517,665,990.64/430,853.74
  6. Step 6: Final answer
    x = 172,953.51

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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.