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Finding the Fourth Proportional to 308,755.47, 463,068.39 and 87,087.63

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Solution

The fourth proportional to 308,755.47, 463,068.39 and 87,087.63 is: 130,613.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,755.47 : 463,068.39 = 87,087.63 : x
  2. Step 2: Convert to fraction form
    308,755.47/463,068.39 = 87,087.63/x
  3. Step 3: Cross multiply
    308,755.47x = 463,068.39 × 87,087.63
  4. Step 4: Simplify right side
    308,755.47x = 40,327,528,613.02
  5. Step 5: Solve for x
    x = 40,327,528,613.02/308,755.47
  6. Step 6: Final answer
    x = 130,613.16

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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.