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Finding the Fourth Proportional to 540,240.72, 745,672.24 and 310,821.51

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Solution

The fourth proportional to 540,240.72, 745,672.24 and 310,821.51 is: 429,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,240.72 : 745,672.24 = 310,821.51 : x
  2. Step 2: Convert to fraction form
    540,240.72/745,672.24 = 310,821.51/x
  3. Step 3: Cross multiply
    540,240.72x = 745,672.24 × 310,821.51
  4. Step 4: Simplify right side
    540,240.72x = 231,770,971,990.41
  5. Step 5: Solve for x
    x = 231,770,971,990.41/540,240.72
  6. Step 6: Final answer
    x = 429,014.26

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Double scale
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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.