Home / 538,103.04-742,582.16-311,879.76

Finding the Fourth Proportional to 538,103.04, 742,582.16 and 311,879.76

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Solution

The fourth proportional to 538,103.04, 742,582.16 and 311,879.76 is: 430,394.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,103.04 : 742,582.16 = 311,879.76 : x
  2. Step 2: Convert to fraction form
    538,103.04/742,582.16 = 311,879.76/x
  3. Step 3: Cross multiply
    538,103.04x = 742,582.16 × 311,879.76
  4. Step 4: Simplify right side
    538,103.04x = 231,596,345,841.08
  5. Step 5: Solve for x
    x = 231,596,345,841.08/538,103.04
  6. Step 6: Final answer
    x = 430,394.05

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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.