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Finding the Fourth Proportional to 388,990.76, 583,345.87 and 164,368.61

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Solution

The fourth proportional to 388,990.76, 583,345.87 and 164,368.61 is: 246,493.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,990.76 : 583,345.87 = 164,368.61 : x
  2. Step 2: Convert to fraction form
    388,990.76/583,345.87 = 164,368.61/x
  3. Step 3: Cross multiply
    388,990.76x = 583,345.87 × 164,368.61
  4. Step 4: Simplify right side
    388,990.76x = 95,883,746,473.49
  5. Step 5: Solve for x
    x = 95,883,746,473.49/388,990.76
  6. Step 6: Final answer
    x = 246,493.63

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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.