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Finding the Fourth Proportional to 280,596.52, 387,218.34 and 153,268.84

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Solution

The fourth proportional to 280,596.52, 387,218.34 and 153,268.84 is: 211,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,596.52 : 387,218.34 = 153,268.84 : x
  2. Step 2: Convert to fraction form
    280,596.52/387,218.34 = 153,268.84/x
  3. Step 3: Cross multiply
    280,596.52x = 387,218.34 × 153,268.84
  4. Step 4: Simplify right side
    280,596.52x = 59,348,505,798.53
  5. Step 5: Solve for x
    x = 59,348,505,798.53/280,596.52
  6. Step 6: Final answer
    x = 211,508.35

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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.