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Finding the Fourth Proportional to 372,478.92, 514,011.06 and 202,709.40

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Solution

The fourth proportional to 372,478.92, 514,011.06 and 202,709.40 is: 279,733.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,478.92 : 514,011.06 = 202,709.40 : x
  2. Step 2: Convert to fraction form
    372,478.92/514,011.06 = 202,709.40/x
  3. Step 3: Cross multiply
    372,478.92x = 514,011.06 × 202,709.40
  4. Step 4: Simplify right side
    372,478.92x = 104,194,873,565.96
  5. Step 5: Solve for x
    x = 104,194,873,565.96/372,478.92
  6. Step 6: Final answer
    x = 279,733.61

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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.