Home / 428,972.04-643,574.70-148,511.16

Finding the Fourth Proportional to 428,972.04, 643,574.70 and 148,511.16

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Solution

The fourth proportional to 428,972.04, 643,574.70 and 148,511.16 is: 222,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,972.04 : 643,574.70 = 148,511.16 : x
  2. Step 2: Convert to fraction form
    428,972.04/643,574.70 = 148,511.16/x
  3. Step 3: Cross multiply
    428,972.04x = 643,574.70 × 148,511.16
  4. Step 4: Simplify right side
    428,972.04x = 95,578,025,243.65
  5. Step 5: Solve for x
    x = 95,578,025,243.65/428,972.04
  6. Step 6: Final answer
    x = 222,807.12

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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.