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Finding the Fourth Proportional to 254,450.40, 381,848.40 and 142,130.40

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Solution

The fourth proportional to 254,450.40, 381,848.40 and 142,130.40 is: 213,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,450.40 : 381,848.40 = 142,130.40 : x
  2. Step 2: Convert to fraction form
    254,450.40/381,848.40 = 142,130.40/x
  3. Step 3: Cross multiply
    254,450.40x = 381,848.40 × 142,130.40
  4. Step 4: Simplify right side
    254,450.40x = 54,272,265,831.36
  5. Step 5: Solve for x
    x = 54,272,265,831.36/254,450.40
  6. Step 6: Final answer
    x = 213,292.12

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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.