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Finding the Fourth Proportional to 358,723.40, 538,041.90 and 148,339.40

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Solution

The fourth proportional to 358,723.40, 538,041.90 and 148,339.40 is: 222,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,723.40 : 538,041.90 = 148,339.40 : x
  2. Step 2: Convert to fraction form
    358,723.40/538,041.90 = 148,339.40/x
  3. Step 3: Cross multiply
    358,723.40x = 538,041.90 × 148,339.40
  4. Step 4: Simplify right side
    358,723.40x = 79,812,812,620.86
  5. Step 5: Solve for x
    x = 79,812,812,620.86/358,723.40
  6. Step 6: Final answer
    x = 222,491.24

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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.