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Finding the Fourth Proportional to 250,587.64, 345,875.70 and 155,037.88

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Solution

The fourth proportional to 250,587.64, 345,875.70 and 155,037.88 is: 213,992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,587.64 : 345,875.70 = 155,037.88 : x
  2. Step 2: Convert to fraction form
    250,587.64/345,875.70 = 155,037.88/x
  3. Step 3: Cross multiply
    250,587.64x = 345,875.70 × 155,037.88
  4. Step 4: Simplify right side
    250,587.64x = 53,623,835,271.52
  5. Step 5: Solve for x
    x = 53,623,835,271.52/250,587.64
  6. Step 6: Final answer
    x = 213,992.34

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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.