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Finding the Fourth Proportional to 274,282.32, 378,544.56 and 153,430.32

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Solution

The fourth proportional to 274,282.32, 378,544.56 and 153,430.32 is: 211,753.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,282.32 : 378,544.56 = 153,430.32 : x
  2. Step 2: Convert to fraction form
    274,282.32/378,544.56 = 153,430.32/x
  3. Step 3: Cross multiply
    274,282.32x = 378,544.56 × 153,430.32
  4. Step 4: Simplify right side
    274,282.32x = 58,080,212,975.06
  5. Step 5: Solve for x
    x = 58,080,212,975.06/274,282.32
  6. Step 6: Final answer
    x = 211,753.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.