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Finding the Fourth Proportional to 207,002.58, 310,897.80 and 128,664.24

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Solution

The fourth proportional to 207,002.58, 310,897.80 and 128,664.24 is: 193,241.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,002.58 : 310,897.80 = 128,664.24 : x
  2. Step 2: Convert to fraction form
    207,002.58/310,897.80 = 128,664.24/x
  3. Step 3: Cross multiply
    207,002.58x = 310,897.80 × 128,664.24
  4. Step 4: Simplify right side
    207,002.58x = 40,001,429,154.67
  5. Step 5: Solve for x
    x = 40,001,429,154.67/207,002.58
  6. Step 6: Final answer
    x = 193,241.21

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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.