Home / 310,438.18-467,731.69-280,487.23

Finding the Fourth Proportional to 310,438.18, 467,731.69 and 280,487.23

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Solution

The fourth proportional to 310,438.18, 467,731.69 and 280,487.23 is: 422,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,438.18 : 467,731.69 = 280,487.23 : x
  2. Step 2: Convert to fraction form
    310,438.18/467,731.69 = 280,487.23/x
  3. Step 3: Cross multiply
    310,438.18x = 467,731.69 × 280,487.23
  4. Step 4: Simplify right side
    310,438.18x = 131,192,766,111.32
  5. Step 5: Solve for x
    x = 131,192,766,111.32/310,438.18
  6. Step 6: Final answer
    x = 422,605.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.