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Finding the Fourth Proportional to 340,318.98, 510,478.47 and 90,994.50

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Solution

The fourth proportional to 340,318.98, 510,478.47 and 90,994.50 is: 136,491.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,318.98 : 510,478.47 = 90,994.50 : x
  2. Step 2: Convert to fraction form
    340,318.98/510,478.47 = 90,994.50/x
  3. Step 3: Cross multiply
    340,318.98x = 510,478.47 × 90,994.50
  4. Step 4: Simplify right side
    340,318.98x = 46,450,733,138.42
  5. Step 5: Solve for x
    x = 46,450,733,138.42/340,318.98
  6. Step 6: Final answer
    x = 136,491.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.