Home / 385,385.10-578,077.65-104,901.90

Finding the Fourth Proportional to 385,385.10, 578,077.65 and 104,901.90

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Solution

The fourth proportional to 385,385.10, 578,077.65 and 104,901.90 is: 157,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,385.10 : 578,077.65 = 104,901.90 : x
  2. Step 2: Convert to fraction form
    385,385.10/578,077.65 = 104,901.90/x
  3. Step 3: Cross multiply
    385,385.10x = 578,077.65 × 104,901.90
  4. Step 4: Simplify right side
    385,385.10x = 60,641,443,832.54
  5. Step 5: Solve for x
    x = 60,641,443,832.54/385,385.10
  6. Step 6: Final answer
    x = 157,352.85

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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.