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Finding the Fourth Proportional to 660,350.84, 990,477.81 and 210,951.02

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Solution

The fourth proportional to 660,350.84, 990,477.81 and 210,951.02 is: 316,411.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,350.84 : 990,477.81 = 210,951.02 : x
  2. Step 2: Convert to fraction form
    660,350.84/990,477.81 = 210,951.02/x
  3. Step 3: Cross multiply
    660,350.84x = 990,477.81 × 210,951.02
  4. Step 4: Simplify right side
    660,350.84x = 208,942,306,783.06
  5. Step 5: Solve for x
    x = 208,942,306,783.06/660,350.84
  6. Step 6: Final answer
    x = 316,411.06

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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.