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Finding the Fourth Proportional to 230,768.40, 346,307.40 and 81,008.40

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Solution

The fourth proportional to 230,768.40, 346,307.40 and 81,008.40 is: 121,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,768.40 : 346,307.40 = 81,008.40 : x
  2. Step 2: Convert to fraction form
    230,768.40/346,307.40 = 81,008.40/x
  3. Step 3: Cross multiply
    230,768.40x = 346,307.40 × 81,008.40
  4. Step 4: Simplify right side
    230,768.40x = 28,053,808,382.16
  5. Step 5: Solve for x
    x = 28,053,808,382.16/230,768.40
  6. Step 6: Final answer
    x = 121,566.94

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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.