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Finding the Fourth Proportional to 370,220.40, 519,883.20 and 370,220.40

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Solution

The fourth proportional to 370,220.40, 519,883.20 and 370,220.40 is: 519,883.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,220.40 : 519,883.20 = 370,220.40 : x
  2. Step 2: Convert to fraction form
    370,220.40/519,883.20 = 370,220.40/x
  3. Step 3: Cross multiply
    370,220.40x = 519,883.20 × 370,220.40
  4. Step 4: Simplify right side
    370,220.40x = 192,471,366,257.28
  5. Step 5: Solve for x
    x = 192,471,366,257.28/370,220.40
  6. Step 6: Final answer
    x = 519,883.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.