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Finding the Fourth Proportional to 210,622.68, 290,637.72 and 125,728.20

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Solution

The fourth proportional to 210,622.68, 290,637.72 and 125,728.20 is: 173,492.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,622.68 : 290,637.72 = 125,728.20 : x
  2. Step 2: Convert to fraction form
    210,622.68/290,637.72 = 125,728.20/x
  3. Step 3: Cross multiply
    210,622.68x = 290,637.72 × 125,728.20
  4. Step 4: Simplify right side
    210,622.68x = 36,541,357,387.70
  5. Step 5: Solve for x
    x = 36,541,357,387.70/210,622.68
  6. Step 6: Final answer
    x = 173,492.04

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1.5x scale

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.