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Finding the Fourth Proportional to 402,349.56, 555,240.18 and 218,586.60

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Solution

The fourth proportional to 402,349.56, 555,240.18 and 218,586.60 is: 301,648.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,349.56 : 555,240.18 = 218,586.60 : x
  2. Step 2: Convert to fraction form
    402,349.56/555,240.18 = 218,586.60/x
  3. Step 3: Cross multiply
    402,349.56x = 555,240.18 × 218,586.60
  4. Step 4: Simplify right side
    402,349.56x = 121,368,063,129.59
  5. Step 5: Solve for x
    x = 121,368,063,129.59/402,349.56
  6. Step 6: Final answer
    x = 301,648.31

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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.