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Finding the Fourth Proportional to 540,397.22, 745,748.89 and 310,949.94

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Solution

The fourth proportional to 540,397.22, 745,748.89 and 310,949.94 is: 429,111.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,397.22 : 745,748.89 = 310,949.94 : x
  2. Step 2: Convert to fraction form
    540,397.22/745,748.89 = 310,949.94/x
  3. Step 3: Cross multiply
    540,397.22x = 745,748.89 × 310,949.94
  4. Step 4: Simplify right side
    540,397.22x = 231,890,571,823.19
  5. Step 5: Solve for x
    x = 231,890,571,823.19/540,397.22
  6. Step 6: Final answer
    x = 429,111.33

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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.