Home / 385,885.36-578,884.02-119,667.28

Finding the Fourth Proportional to 385,885.36, 578,884.02 and 119,667.28

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Solution

The fourth proportional to 385,885.36, 578,884.02 and 119,667.28 is: 179,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,885.36 : 578,884.02 = 119,667.28 : x
  2. Step 2: Convert to fraction form
    385,885.36/578,884.02 = 119,667.28/x
  3. Step 3: Cross multiply
    385,885.36x = 578,884.02 × 119,667.28
  4. Step 4: Simplify right side
    385,885.36x = 69,273,476,108.87
  5. Step 5: Solve for x
    x = 69,273,476,108.87/385,885.36
  6. Step 6: Final answer
    x = 179,518.28

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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.