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Finding the Fourth Proportional to 340,378.98, 510,568.50 and 91,054.50

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Solution

The fourth proportional to 340,378.98, 510,568.50 and 91,054.50 is: 136,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,378.98 : 510,568.50 = 91,054.50 : x
  2. Step 2: Convert to fraction form
    340,378.98/510,568.50 = 91,054.50/x
  3. Step 3: Cross multiply
    340,378.98x = 510,568.50 × 91,054.50
  4. Step 4: Simplify right side
    340,378.98x = 46,489,559,483.25
  5. Step 5: Solve for x
    x = 46,489,559,483.25/340,378.98
  6. Step 6: Final answer
    x = 136,581.76

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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.