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Finding the Fourth Proportional to 540,266.94, 745,626.15 and 310,834.25

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Solution

The fourth proportional to 540,266.94, 745,626.15 and 310,834.25 is: 428,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,266.94 : 745,626.15 = 310,834.25 : x
  2. Step 2: Convert to fraction form
    540,266.94/745,626.15 = 310,834.25/x
  3. Step 3: Cross multiply
    540,266.94x = 745,626.15 × 310,834.25
  4. Step 4: Simplify right side
    540,266.94x = 231,766,141,387.51
  5. Step 5: Solve for x
    x = 231,766,141,387.51/540,266.94
  6. Step 6: Final answer
    x = 428,984.50

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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.