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Finding the Fourth Proportional to 308,753.34, 463,065.21 and 87,085.50

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Solution

The fourth proportional to 308,753.34, 463,065.21 and 87,085.50 is: 130,609.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,753.34 : 463,065.21 = 87,085.50 : x
  2. Step 2: Convert to fraction form
    308,753.34/463,065.21 = 87,085.50/x
  3. Step 3: Cross multiply
    308,753.34x = 463,065.21 × 87,085.50
  4. Step 4: Simplify right side
    308,753.34x = 40,326,265,345.46
  5. Step 5: Solve for x
    x = 40,326,265,345.46/308,753.34
  6. Step 6: Final answer
    x = 130,609.97

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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.