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Finding the Fourth Proportional to 357,478.61, 493,640.88 and 266,676.89

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Solution

The fourth proportional to 357,478.61, 493,640.88 and 266,676.89 is: 368,253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,478.61 : 493,640.88 = 266,676.89 : x
  2. Step 2: Convert to fraction form
    357,478.61/493,640.88 = 266,676.89/x
  3. Step 3: Cross multiply
    357,478.61x = 493,640.88 × 266,676.89
  4. Step 4: Simplify right side
    357,478.61x = 131,642,612,187.06
  5. Step 5: Solve for x
    x = 131,642,612,187.06/357,478.61
  6. Step 6: Final answer
    x = 368,253.12

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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.