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Finding the Fourth Proportional to 234,085.40, 350,534.10 and 128,785.40

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Solution

The fourth proportional to 234,085.40, 350,534.10 and 128,785.40 is: 192,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,085.40 : 350,534.10 = 128,785.40 : x
  2. Step 2: Convert to fraction form
    234,085.40/350,534.10 = 128,785.40/x
  3. Step 3: Cross multiply
    234,085.40x = 350,534.10 × 128,785.40
  4. Step 4: Simplify right side
    234,085.40x = 45,143,674,282.14
  5. Step 5: Solve for x
    x = 45,143,674,282.14/234,085.40
  6. Step 6: Final answer
    x = 192,851.30

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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.