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Finding the Fourth Proportional to 340,520.81, 469,921.88 and 187,559.55

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Solution

The fourth proportional to 340,520.81, 469,921.88 and 187,559.55 is: 258,833.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,520.81 : 469,921.88 = 187,559.55 : x
  2. Step 2: Convert to fraction form
    340,520.81/469,921.88 = 187,559.55/x
  3. Step 3: Cross multiply
    340,520.81x = 469,921.88 × 187,559.55
  4. Step 4: Simplify right side
    340,520.81x = 88,138,337,522.76
  5. Step 5: Solve for x
    x = 88,138,337,522.76/340,520.81
  6. Step 6: Final answer
    x = 258,833.93

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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.