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Finding the Fourth Proportional to 261,638.66, 360,958.30 and 151,184.32

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Solution

The fourth proportional to 261,638.66, 360,958.30 and 151,184.32 is: 208,574.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,638.66 : 360,958.30 = 151,184.32 : x
  2. Step 2: Convert to fraction form
    261,638.66/360,958.30 = 151,184.32/x
  3. Step 3: Cross multiply
    261,638.66x = 360,958.30 × 151,184.32
  4. Step 4: Simplify right side
    261,638.66x = 54,571,234,420.44
  5. Step 5: Solve for x
    x = 54,571,234,420.44/261,638.66
  6. Step 6: Final answer
    x = 208,574.82

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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.