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Finding the Fourth Proportional to 343,364.32, 514,833.25 and 143,439.72

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Solution

The fourth proportional to 343,364.32, 514,833.25 and 143,439.72 is: 215,070.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,364.32 : 514,833.25 = 143,439.72 : x
  2. Step 2: Convert to fraction form
    343,364.32/514,833.25 = 143,439.72/x
  3. Step 3: Cross multiply
    343,364.32x = 514,833.25 × 143,439.72
  4. Step 4: Simplify right side
    343,364.32x = 73,847,537,226.69
  5. Step 5: Solve for x
    x = 73,847,537,226.69/343,364.32
  6. Step 6: Final answer
    x = 215,070.50

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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.