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Finding the Fourth Proportional to 343,690.60, 514,925.88 and 143,570.56

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Solution

The fourth proportional to 343,690.60, 514,925.88 and 143,570.56 is: 215,101.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,690.60 : 514,925.88 = 143,570.56 : x
  2. Step 2: Convert to fraction form
    343,690.60/514,925.88 = 143,570.56/x
  3. Step 3: Cross multiply
    343,690.60x = 514,925.88 × 143,570.56
  4. Step 4: Simplify right side
    343,690.60x = 73,928,196,950.09
  5. Step 5: Solve for x
    x = 73,928,196,950.09/343,690.60
  6. Step 6: Final answer
    x = 215,101.02

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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.