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Finding the Fourth Proportional to 342,570.89, 513,890.87 and 117,901.80

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Solution

The fourth proportional to 342,570.89, 513,890.87 and 117,901.80 is: 176,864.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,570.89 : 513,890.87 = 117,901.80 : x
  2. Step 2: Convert to fraction form
    342,570.89/513,890.87 = 117,901.80/x
  3. Step 3: Cross multiply
    342,570.89x = 513,890.87 × 117,901.80
  4. Step 4: Simplify right side
    342,570.89x = 60,588,657,987.06
  5. Step 5: Solve for x
    x = 60,588,657,987.06/342,570.89
  6. Step 6: Final answer
    x = 176,864.58

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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.