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Finding the Fourth Proportional to 358,472.40, 537,708.60 and 340,976.40

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Solution

The fourth proportional to 358,472.40, 537,708.60 and 340,976.40 is: 511,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,472.40 : 537,708.60 = 340,976.40 : x
  2. Step 2: Convert to fraction form
    358,472.40/537,708.60 = 340,976.40/x
  3. Step 3: Cross multiply
    358,472.40x = 537,708.60 × 340,976.40
  4. Step 4: Simplify right side
    358,472.40x = 183,345,942,677.04
  5. Step 5: Solve for x
    x = 183,345,942,677.04/358,472.40
  6. Step 6: Final answer
    x = 511,464.60

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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.