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Finding the Fourth Proportional to 247,005, 341,109.12 and 210,985.11

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Solution

The fourth proportional to 247,005, 341,109.12 and 210,985.11 is: 291,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,005 : 341,109.12 = 210,985.11 : x
  2. Step 2: Convert to fraction form
    247,005/341,109.12 = 210,985.11/x
  3. Step 3: Cross multiply
    247,005x = 341,109.12 × 210,985.11
  4. Step 4: Simplify right side
    247,005x = 71,968,945,205.20
  5. Step 5: Solve for x
    x = 71,968,945,205.20/247,005
  6. Step 6: Final answer
    x = 291,366.35

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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.