Home / 419,511.04-578,875.36-238,221.60

Finding the Fourth Proportional to 419,511.04, 578,875.36 and 238,221.60

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Solution

The fourth proportional to 419,511.04, 578,875.36 and 238,221.60 is: 328,717.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,511.04 : 578,875.36 = 238,221.60 : x
  2. Step 2: Convert to fraction form
    419,511.04/578,875.36 = 238,221.60/x
  3. Step 3: Cross multiply
    419,511.04x = 578,875.36 × 238,221.60
  4. Step 4: Simplify right side
    419,511.04x = 137,900,614,459.78
  5. Step 5: Solve for x
    x = 137,900,614,459.78/419,511.04
  6. Step 6: Final answer
    x = 328,717.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.