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Finding the Fourth Proportional to 613,680.86, 920,660.71 and 187,254.81

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Solution

The fourth proportional to 613,680.86, 920,660.71 and 187,254.81 is: 280,924.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,680.86 : 920,660.71 = 187,254.81 : x
  2. Step 2: Convert to fraction form
    613,680.86/920,660.71 = 187,254.81/x
  3. Step 3: Cross multiply
    613,680.86x = 920,660.71 × 187,254.81
  4. Step 4: Simplify right side
    613,680.86x = 172,398,148,271.19
  5. Step 5: Solve for x
    x = 172,398,148,271.19/613,680.86
  6. Step 6: Final answer
    x = 280,924.76

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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.