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Finding the Fourth Proportional to 370,378.20, 554,911.20 and 313,953.60

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Solution

The fourth proportional to 370,378.20, 554,911.20 and 313,953.60 is: 470,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,378.20 : 554,911.20 = 313,953.60 : x
  2. Step 2: Convert to fraction form
    370,378.20/554,911.20 = 313,953.60/x
  3. Step 3: Cross multiply
    370,378.20x = 554,911.20 × 313,953.60
  4. Step 4: Simplify right side
    370,378.20x = 174,216,368,920.32
  5. Step 5: Solve for x
    x = 174,216,368,920.32/370,378.20
  6. Step 6: Final answer
    x = 470,374.25

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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.