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Finding the Fourth Proportional to 357,515.31, 493,691.37 and 266,713.58

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Solution

The fourth proportional to 357,515.31, 493,691.37 and 266,713.58 is: 368,303.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,515.31 : 493,691.37 = 266,713.58 : x
  2. Step 2: Convert to fraction form
    357,515.31/493,691.37 = 266,713.58/x
  3. Step 3: Cross multiply
    357,515.31x = 493,691.37 × 266,713.58
  4. Step 4: Simplify right side
    357,515.31x = 131,674,190,239.35
  5. Step 5: Solve for x
    x = 131,674,190,239.35/357,515.31
  6. Step 6: Final answer
    x = 368,303.64

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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.