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Finding the Fourth Proportional to 202,208.30, 303,312.45 and 127,412.90

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Solution

The fourth proportional to 202,208.30, 303,312.45 and 127,412.90 is: 191,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,208.30 : 303,312.45 = 127,412.90 : x
  2. Step 2: Convert to fraction form
    202,208.30/303,312.45 = 127,412.90/x
  3. Step 3: Cross multiply
    202,208.30x = 303,312.45 × 127,412.90
  4. Step 4: Simplify right side
    202,208.30x = 38,645,918,860.61
  5. Step 5: Solve for x
    x = 38,645,918,860.61/202,208.30
  6. Step 6: Final answer
    x = 191,119.35

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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.