Home / 311,805.83-430,281.56-197,146.19

Finding the Fourth Proportional to 311,805.83, 430,281.56 and 197,146.19

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Solution

The fourth proportional to 311,805.83, 430,281.56 and 197,146.19 is: 272,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,805.83 : 430,281.56 = 197,146.19 : x
  2. Step 2: Convert to fraction form
    311,805.83/430,281.56 = 197,146.19/x
  3. Step 3: Cross multiply
    311,805.83x = 430,281.56 × 197,146.19
  4. Step 4: Simplify right side
    311,805.83x = 84,828,367,044.12
  5. Step 5: Solve for x
    x = 84,828,367,044.12/311,805.83
  6. Step 6: Final answer
    x = 272,055.11

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1.5x scale

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.