Home / 385,435.38-578,111.58-101,154.42

Finding the Fourth Proportional to 385,435.38, 578,111.58 and 101,154.42

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Solution

The fourth proportional to 385,435.38, 578,111.58 and 101,154.42 is: 151,720.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,435.38 : 578,111.58 = 101,154.42 : x
  2. Step 2: Convert to fraction form
    385,435.38/578,111.58 = 101,154.42/x
  3. Step 3: Cross multiply
    385,435.38x = 578,111.58 × 101,154.42
  4. Step 4: Simplify right side
    385,435.38x = 58,478,541,570.18
  5. Step 5: Solve for x
    x = 58,478,541,570.18/385,435.38
  6. Step 6: Final answer
    x = 151,720.74

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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.