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Finding the Fourth Proportional to 540,278.35, 745,612.82 and 310,870.49

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Solution

The fourth proportional to 540,278.35, 745,612.82 and 310,870.49 is: 429,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,278.35 : 745,612.82 = 310,870.49 : x
  2. Step 2: Convert to fraction form
    540,278.35/745,612.82 = 310,870.49/x
  3. Step 3: Cross multiply
    540,278.35x = 745,612.82 × 310,870.49
  4. Step 4: Simplify right side
    540,278.35x = 231,789,023,655.43
  5. Step 5: Solve for x
    x = 231,789,023,655.43/540,278.35
  6. Step 6: Final answer
    x = 429,017.79

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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.