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Finding the Fourth Proportional to 357,403.34, 536,090.16 and 91,170.38

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Solution

The fourth proportional to 357,403.34, 536,090.16 and 91,170.38 is: 136,751.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,403.34 : 536,090.16 = 91,170.38 : x
  2. Step 2: Convert to fraction form
    357,403.34/536,090.16 = 91,170.38/x
  3. Step 3: Cross multiply
    357,403.34x = 536,090.16 × 91,170.38
  4. Step 4: Simplify right side
    357,403.34x = 48,875,543,601.46
  5. Step 5: Solve for x
    x = 48,875,543,601.46/357,403.34
  6. Step 6: Final answer
    x = 136,751.78

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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.