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Finding the Fourth Proportional to 358,041.36, 537,003.72 and 121,378.80

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Solution

The fourth proportional to 358,041.36, 537,003.72 and 121,378.80 is: 182,048.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,041.36 : 537,003.72 = 121,378.80 : x
  2. Step 2: Convert to fraction form
    358,041.36/537,003.72 = 121,378.80/x
  3. Step 3: Cross multiply
    358,041.36x = 537,003.72 × 121,378.80
  4. Step 4: Simplify right side
    358,041.36x = 65,180,867,129.14
  5. Step 5: Solve for x
    x = 65,180,867,129.14/358,041.36
  6. Step 6: Final answer
    x = 182,048.43

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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.