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Finding the Fourth Proportional to 418,457.80, 577,481.70 and 237,188.20

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Solution

The fourth proportional to 418,457.80, 577,481.70 and 237,188.20 is: 327,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,457.80 : 577,481.70 = 237,188.20 : x
  2. Step 2: Convert to fraction form
    418,457.80/577,481.70 = 237,188.20/x
  3. Step 3: Cross multiply
    418,457.80x = 577,481.70 × 237,188.20
  4. Step 4: Simplify right side
    418,457.80x = 136,971,844,955.94
  5. Step 5: Solve for x
    x = 136,971,844,955.94/418,457.80
  6. Step 6: Final answer
    x = 327,325.35

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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.