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Finding the Fourth Proportional to 280,551.74, 387,160.76 and 153,227.34

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Solution

The fourth proportional to 280,551.74, 387,160.76 and 153,227.34 is: 211,453.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,551.74 : 387,160.76 = 153,227.34 : x
  2. Step 2: Convert to fraction form
    280,551.74/387,160.76 = 153,227.34/x
  3. Step 3: Cross multiply
    280,551.74x = 387,160.76 × 153,227.34
  4. Step 4: Simplify right side
    280,551.74x = 59,323,613,407.18
  5. Step 5: Solve for x
    x = 59,323,613,407.18/280,551.74
  6. Step 6: Final answer
    x = 211,453.38

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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.