Home / 296,939.10-445,408.65-86,598.30

Finding the Fourth Proportional to 296,939.10, 445,408.65 and 86,598.30

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Solution

The fourth proportional to 296,939.10, 445,408.65 and 86,598.30 is: 129,897.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,939.10 : 445,408.65 = 86,598.30 : x
  2. Step 2: Convert to fraction form
    296,939.10/445,408.65 = 86,598.30/x
  3. Step 3: Cross multiply
    296,939.10x = 445,408.65 × 86,598.30
  4. Step 4: Simplify right side
    296,939.10x = 38,571,631,895.30
  5. Step 5: Solve for x
    x = 38,571,631,895.30/296,939.10
  6. Step 6: Final answer
    x = 129,897.45

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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.