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Finding the Fourth Proportional to 274,259.22, 378,512.78 and 153,407.22

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Solution

The fourth proportional to 274,259.22, 378,512.78 and 153,407.22 is: 211,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,259.22 : 378,512.78 = 153,407.22 : x
  2. Step 2: Convert to fraction form
    274,259.22/378,512.78 = 153,407.22/x
  3. Step 3: Cross multiply
    274,259.22x = 378,512.78 × 153,407.22
  4. Step 4: Simplify right side
    274,259.22x = 58,066,592,547.24
  5. Step 5: Solve for x
    x = 58,066,592,547.24/274,259.22
  6. Step 6: Final answer
    x = 211,721.57

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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.