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Finding the Fourth Proportional to 418,079.12, 577,188.58 and 275,254.38

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Solution

The fourth proportional to 418,079.12, 577,188.58 and 275,254.38 is: 380,008.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,079.12 : 577,188.58 = 275,254.38 : x
  2. Step 2: Convert to fraction form
    418,079.12/577,188.58 = 275,254.38/x
  3. Step 3: Cross multiply
    418,079.12x = 577,188.58 × 275,254.38
  4. Step 4: Simplify right side
    418,079.12x = 158,873,684,730.98
  5. Step 5: Solve for x
    x = 158,873,684,730.98/418,079.12
  6. Step 6: Final answer
    x = 380,008.66

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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.