Home / 385,621.70-578,518.95-148,943.30

Finding the Fourth Proportional to 385,621.70, 578,518.95 and 148,943.30

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Solution

The fourth proportional to 385,621.70, 578,518.95 and 148,943.30 is: 223,448.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,621.70 : 578,518.95 = 148,943.30 : x
  2. Step 2: Convert to fraction form
    385,621.70/578,518.95 = 148,943.30/x
  3. Step 3: Cross multiply
    385,621.70x = 578,518.95 × 148,943.30
  4. Step 4: Simplify right side
    385,621.70x = 86,166,521,525.54
  5. Step 5: Solve for x
    x = 86,166,521,525.54/385,621.70
  6. Step 6: Final answer
    x = 223,448.32

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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.