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Finding the Fourth Proportional to 207,139.40, 310,709.10 and 185,488.10

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Solution

The fourth proportional to 207,139.40, 310,709.10 and 185,488.10 is: 278,232.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,139.40 : 310,709.10 = 185,488.10 : x
  2. Step 2: Convert to fraction form
    207,139.40/310,709.10 = 185,488.10/x
  3. Step 3: Cross multiply
    207,139.40x = 310,709.10 × 185,488.10
  4. Step 4: Simplify right side
    207,139.40x = 57,632,840,611.71
  5. Step 5: Solve for x
    x = 57,632,840,611.71/207,139.40
  6. Step 6: Final answer
    x = 278,232.15

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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.