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Finding the Fourth Proportional to 540,319.84, 745,620.30 and 310,951

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Solution

The fourth proportional to 540,319.84, 745,620.30 and 310,951 is: 429,100.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,319.84 : 745,620.30 = 310,951 : x
  2. Step 2: Convert to fraction form
    540,319.84/745,620.30 = 310,951/x
  3. Step 3: Cross multiply
    540,319.84x = 745,620.30 × 310,951
  4. Step 4: Simplify right side
    540,319.84x = 231,851,377,905.30
  5. Step 5: Solve for x
    x = 231,851,377,905.30/540,319.84
  6. Step 6: Final answer
    x = 429,100.25

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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.