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Finding the Fourth Proportional to 280,761.50, 387,450.01 and 153,437.10

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Solution

The fourth proportional to 280,761.50, 387,450.01 and 153,437.10 is: 211,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,761.50 : 387,450.01 = 153,437.10 : x
  2. Step 2: Convert to fraction form
    280,761.50/387,450.01 = 153,437.10/x
  3. Step 3: Cross multiply
    280,761.50x = 387,450.01 × 153,437.10
  4. Step 4: Simplify right side
    280,761.50x = 59,449,204,668.23
  5. Step 5: Solve for x
    x = 59,449,204,668.23/280,761.50
  6. Step 6: Final answer
    x = 211,742.72

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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.