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Finding the Fourth Proportional to 213,148.80, 319,692.96 and 72,887.04

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Solution

The fourth proportional to 213,148.80, 319,692.96 and 72,887.04 is: 109,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,148.80 : 319,692.96 = 72,887.04 : x
  2. Step 2: Convert to fraction form
    213,148.80/319,692.96 = 72,887.04/x
  3. Step 3: Cross multiply
    213,148.80x = 319,692.96 × 72,887.04
  4. Step 4: Simplify right side
    213,148.80x = 23,301,473,563.24
  5. Step 5: Solve for x
    x = 23,301,473,563.24/213,148.80
  6. Step 6: Final answer
    x = 109,320.22

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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.