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Finding the Fourth Proportional to 334,990.52, 502,503.06 and 85,674.68

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Solution

The fourth proportional to 334,990.52, 502,503.06 and 85,674.68 is: 128,516.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,990.52 : 502,503.06 = 85,674.68 : x
  2. Step 2: Convert to fraction form
    334,990.52/502,503.06 = 85,674.68/x
  3. Step 3: Cross multiply
    334,990.52x = 502,503.06 × 85,674.68
  4. Step 4: Simplify right side
    334,990.52x = 43,051,788,864.52
  5. Step 5: Solve for x
    x = 43,051,788,864.52/334,990.52
  6. Step 6: Final answer
    x = 128,516.44

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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.