Home / 385,664.84-578,438.94-105,204.20

Finding the Fourth Proportional to 385,664.84, 578,438.94 and 105,204.20

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Solution

The fourth proportional to 385,664.84, 578,438.94 and 105,204.20 is: 157,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,664.84 : 578,438.94 = 105,204.20 : x
  2. Step 2: Convert to fraction form
    385,664.84/578,438.94 = 105,204.20/x
  3. Step 3: Cross multiply
    385,664.84x = 578,438.94 × 105,204.20
  4. Step 4: Simplify right side
    385,664.84x = 60,854,205,931.55
  5. Step 5: Solve for x
    x = 60,854,205,931.55/385,664.84
  6. Step 6: Final answer
    x = 157,790.39

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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.