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Finding the Fourth Proportional to 477,216.88, 658,490.78 and 280,866.61

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Solution

The fourth proportional to 477,216.88, 658,490.78 and 280,866.61 is: 387,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,216.88 : 658,490.78 = 280,866.61 : x
  2. Step 2: Convert to fraction form
    477,216.88/658,490.78 = 280,866.61/x
  3. Step 3: Cross multiply
    477,216.88x = 658,490.78 × 280,866.61
  4. Step 4: Simplify right side
    477,216.88x = 184,948,075,287.24
  5. Step 5: Solve for x
    x = 184,948,075,287.24/477,216.88
  6. Step 6: Final answer
    x = 387,555.60

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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.