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Finding the Fourth Proportional to 250,686, 345,946.68 and 137,509.02

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Solution

The fourth proportional to 250,686, 345,946.68 and 137,509.02 is: 189,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,686 : 345,946.68 = 137,509.02 : x
  2. Step 2: Convert to fraction form
    250,686/345,946.68 = 137,509.02/x
  3. Step 3: Cross multiply
    250,686x = 345,946.68 × 137,509.02
  4. Step 4: Simplify right side
    250,686x = 47,570,788,939.05
  5. Step 5: Solve for x
    x = 47,570,788,939.05/250,686
  6. Step 6: Final answer
    x = 189,762.45

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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.