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Finding the Fourth Proportional to 383,607.70, 575,411.55 and 243,985.30

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Solution

The fourth proportional to 383,607.70, 575,411.55 and 243,985.30 is: 365,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,607.70 : 575,411.55 = 243,985.30 : x
  2. Step 2: Convert to fraction form
    383,607.70/575,411.55 = 243,985.30/x
  3. Step 3: Cross multiply
    383,607.70x = 575,411.55 × 243,985.30
  4. Step 4: Simplify right side
    383,607.70x = 140,391,959,650.22
  5. Step 5: Solve for x
    x = 140,391,959,650.22/383,607.70
  6. Step 6: Final answer
    x = 365,977.95

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Similar ratio
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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.