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Finding the Fourth Proportional to 357,688.20, 535,917.90 and 170,296.20

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Solution

The fourth proportional to 357,688.20, 535,917.90 and 170,296.20 is: 255,151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,688.20 : 535,917.90 = 170,296.20 : x
  2. Step 2: Convert to fraction form
    357,688.20/535,917.90 = 170,296.20/x
  3. Step 3: Cross multiply
    357,688.20x = 535,917.90 × 170,296.20
  4. Step 4: Simplify right side
    357,688.20x = 91,264,781,881.98
  5. Step 5: Solve for x
    x = 91,264,781,881.98/357,688.20
  6. Step 6: Final answer
    x = 255,151.78

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1.5x scale

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.