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Finding the Fourth Proportional to 540,073.72, 810,227.35 and 287,317.47

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Solution

The fourth proportional to 540,073.72, 810,227.35 and 287,317.47 is: 431,038.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,073.72 : 810,227.35 = 287,317.47 : x
  2. Step 2: Convert to fraction form
    540,073.72/810,227.35 = 287,317.47/x
  3. Step 3: Cross multiply
    540,073.72x = 810,227.35 × 287,317.47
  4. Step 4: Simplify right side
    540,073.72x = 232,792,474,952.60
  5. Step 5: Solve for x
    x = 232,792,474,952.60/540,073.72
  6. Step 6: Final answer
    x = 431,038.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.