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Finding the Fourth Proportional to 492,386.19, 679,493.07 and 266,031.69

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Solution

The fourth proportional to 492,386.19, 679,493.07 and 266,031.69 is: 367,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,386.19 : 679,493.07 = 266,031.69 : x
  2. Step 2: Convert to fraction form
    492,386.19/679,493.07 = 266,031.69/x
  3. Step 3: Cross multiply
    492,386.19x = 679,493.07 × 266,031.69
  4. Step 4: Simplify right side
    492,386.19x = 180,766,689,755.39
  5. Step 5: Solve for x
    x = 180,766,689,755.39/492,386.19
  6. Step 6: Final answer
    x = 367,123.80

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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.