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Finding the Fourth Proportional to 210,482.38, 315,685.62 and 60,685.89

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Solution

The fourth proportional to 210,482.38, 315,685.62 and 60,685.89 is: 91,017.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,482.38 : 315,685.62 = 60,685.89 : x
  2. Step 2: Convert to fraction form
    210,482.38/315,685.62 = 60,685.89/x
  3. Step 3: Cross multiply
    210,482.38x = 315,685.62 × 60,685.89
  4. Step 4: Simplify right side
    210,482.38x = 19,157,662,809.90
  5. Step 5: Solve for x
    x = 19,157,662,809.90/210,482.38
  6. Step 6: Final answer
    x = 91,017.89

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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.