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Finding the Fourth Proportional to 207,002.10, 310,503.15 and 199,128.90

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Solution

The fourth proportional to 207,002.10, 310,503.15 and 199,128.90 is: 298,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,002.10 : 310,503.15 = 199,128.90 : x
  2. Step 2: Convert to fraction form
    207,002.10/310,503.15 = 199,128.90/x
  3. Step 3: Cross multiply
    207,002.10x = 310,503.15 × 199,128.90
  4. Step 4: Simplify right side
    207,002.10x = 61,830,150,706.04
  5. Step 5: Solve for x
    x = 61,830,150,706.04/207,002.10
  6. Step 6: Final answer
    x = 298,693.35

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1.5x scale

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.