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Finding the Fourth Proportional to 492,089.80, 738,480.30 and 315,027.40

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Solution

The fourth proportional to 492,089.80, 738,480.30 and 315,027.40 is: 472,762.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,089.80 : 738,480.30 = 315,027.40 : x
  2. Step 2: Convert to fraction form
    492,089.80/738,480.30 = 315,027.40/x
  3. Step 3: Cross multiply
    492,089.80x = 738,480.30 × 315,027.40
  4. Step 4: Simplify right side
    492,089.80x = 232,641,528,860.22
  5. Step 5: Solve for x
    x = 232,641,528,860.22/492,089.80
  6. Step 6: Final answer
    x = 472,762.35

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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.