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Finding the Fourth Proportional to 258,659.20, 388,280.40 and 153,537.40

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Solution

The fourth proportional to 258,659.20, 388,280.40 and 153,537.40 is: 230,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,659.20 : 388,280.40 = 153,537.40 : x
  2. Step 2: Convert to fraction form
    258,659.20/388,280.40 = 153,537.40/x
  3. Step 3: Cross multiply
    258,659.20x = 388,280.40 × 153,537.40
  4. Step 4: Simplify right side
    258,659.20x = 59,615,563,086.96
  5. Step 5: Solve for x
    x = 59,615,563,086.96/258,659.20
  6. Step 6: Final answer
    x = 230,479.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.