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Finding the Fourth Proportional to 280,481.82, 387,064.88 and 153,157.53

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Solution

The fourth proportional to 280,481.82, 387,064.88 and 153,157.53 is: 211,357.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,481.82 : 387,064.88 = 153,157.53 : x
  2. Step 2: Convert to fraction form
    280,481.82/387,064.88 = 153,157.53/x
  3. Step 3: Cross multiply
    280,481.82x = 387,064.88 × 153,157.53
  4. Step 4: Simplify right side
    280,481.82x = 59,281,900,204.76
  5. Step 5: Solve for x
    x = 59,281,900,204.76/280,481.82
  6. Step 6: Final answer
    x = 211,357.37

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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.