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Finding the Fourth Proportional to 423,084.98, 634,627.71 and 210,000.11

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Solution

The fourth proportional to 423,084.98, 634,627.71 and 210,000.11 is: 315,000.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,084.98 : 634,627.71 = 210,000.11 : x
  2. Step 2: Convert to fraction form
    423,084.98/634,627.71 = 210,000.11/x
  3. Step 3: Cross multiply
    423,084.98x = 634,627.71 × 210,000.11
  4. Step 4: Simplify right side
    423,084.98x = 133,271,888,909.05
  5. Step 5: Solve for x
    x = 133,271,888,909.05/423,084.98
  6. Step 6: Final answer
    x = 315,000.28

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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.