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Finding the Fourth Proportional to 370,922.70, 556,384.05 and 213,458.70

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Solution

The fourth proportional to 370,922.70, 556,384.05 and 213,458.70 is: 320,188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,922.70 : 556,384.05 = 213,458.70 : x
  2. Step 2: Convert to fraction form
    370,922.70/556,384.05 = 213,458.70/x
  3. Step 3: Cross multiply
    370,922.70x = 556,384.05 × 213,458.70
  4. Step 4: Simplify right side
    370,922.70x = 118,765,016,013.74
  5. Step 5: Solve for x
    x = 118,765,016,013.74/370,922.70
  6. Step 6: Final answer
    x = 320,188.05

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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.