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Finding the Fourth Proportional to 253,394.61, 379,827.12 and 84,776.22

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Solution

The fourth proportional to 253,394.61, 379,827.12 and 84,776.22 is: 127,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,394.61 : 379,827.12 = 84,776.22 : x
  2. Step 2: Convert to fraction form
    253,394.61/379,827.12 = 84,776.22/x
  3. Step 3: Cross multiply
    253,394.61x = 379,827.12 × 84,776.22
  4. Step 4: Simplify right side
    253,394.61x = 32,200,307,487.09
  5. Step 5: Solve for x
    x = 32,200,307,487.09/253,394.61
  6. Step 6: Final answer
    x = 127,075.74

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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.