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Finding the Fourth Proportional to 360,606.60, 497,480.74 and 217,285.20

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Solution

The fourth proportional to 360,606.60, 497,480.74 and 217,285.20 is: 299,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,606.60 : 497,480.74 = 217,285.20 : x
  2. Step 2: Convert to fraction form
    360,606.60/497,480.74 = 217,285.20/x
  3. Step 3: Cross multiply
    360,606.60x = 497,480.74 × 217,285.20
  4. Step 4: Simplify right side
    360,606.60x = 108,095,201,543.84
  5. Step 5: Solve for x
    x = 108,095,201,543.84/360,606.60
  6. Step 6: Final answer
    x = 299,759.35

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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.