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Finding the Fourth Proportional to 351,715.50, 485,364.54 and 190,570.05

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Solution

The fourth proportional to 351,715.50, 485,364.54 and 190,570.05 is: 262,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,715.50 : 485,364.54 = 190,570.05 : x
  2. Step 2: Convert to fraction form
    351,715.50/485,364.54 = 190,570.05/x
  3. Step 3: Cross multiply
    351,715.50x = 485,364.54 × 190,570.05
  4. Step 4: Simplify right side
    351,715.50x = 92,495,944,656.03
  5. Step 5: Solve for x
    x = 92,495,944,656.03/351,715.50
  6. Step 6: Final answer
    x = 262,985.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.