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Finding the Fourth Proportional to 659,373.34, 989,049.20 and 210,088.10

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Solution

The fourth proportional to 659,373.34, 989,049.20 and 210,088.10 is: 315,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,373.34 : 989,049.20 = 210,088.10 : x
  2. Step 2: Convert to fraction form
    659,373.34/989,049.20 = 210,088.10/x
  3. Step 3: Cross multiply
    659,373.34x = 989,049.20 × 210,088.10
  4. Step 4: Simplify right side
    659,373.34x = 207,787,470,943.46
  5. Step 5: Solve for x
    x = 207,787,470,943.46/659,373.34
  6. Step 6: Final answer
    x = 315,128.71

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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.