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Finding the Fourth Proportional to 274,329.40, 378,609.42 and 153,477.40

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Solution

The fourth proportional to 274,329.40, 378,609.42 and 153,477.40 is: 211,818.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,329.40 : 378,609.42 = 153,477.40 : x
  2. Step 2: Convert to fraction form
    274,329.40/378,609.42 = 153,477.40/x
  3. Step 3: Cross multiply
    274,329.40x = 378,609.42 × 153,477.40
  4. Step 4: Simplify right side
    274,329.40x = 58,107,989,397.11
  5. Step 5: Solve for x
    x = 58,107,989,397.11/274,329.40
  6. Step 6: Final answer
    x = 211,818.31

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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.