Home / 346,721.20-520,081.80-147,007.60

Finding the Fourth Proportional to 346,721.20, 520,081.80 and 147,007.60

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Solution

The fourth proportional to 346,721.20, 520,081.80 and 147,007.60 is: 220,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,721.20 : 520,081.80 = 147,007.60 : x
  2. Step 2: Convert to fraction form
    346,721.20/520,081.80 = 147,007.60/x
  3. Step 3: Cross multiply
    346,721.20x = 520,081.80 × 147,007.60
  4. Step 4: Simplify right side
    346,721.20x = 76,455,977,221.68
  5. Step 5: Solve for x
    x = 76,455,977,221.68/346,721.20
  6. Step 6: Final answer
    x = 220,511.40

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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.