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Finding the Fourth Proportional to 380,259.25, 570,949.59 and 212,108.11

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Solution

The fourth proportional to 380,259.25, 570,949.59 and 212,108.11 is: 318,474.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,259.25 : 570,949.59 = 212,108.11 : x
  2. Step 2: Convert to fraction form
    380,259.25/570,949.59 = 212,108.11/x
  3. Step 3: Cross multiply
    380,259.25x = 570,949.59 × 212,108.11
  4. Step 4: Simplify right side
    380,259.25x = 121,103,038,440.18
  5. Step 5: Solve for x
    x = 121,103,038,440.18/380,259.25
  6. Step 6: Final answer
    x = 318,474.93

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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.