Home / 428,124.30-642,316.02-161,966.40

Finding the Fourth Proportional to 428,124.30, 642,316.02 and 161,966.40

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Solution

The fourth proportional to 428,124.30, 642,316.02 and 161,966.40 is: 242,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,124.30 : 642,316.02 = 161,966.40 : x
  2. Step 2: Convert to fraction form
    428,124.30/642,316.02 = 161,966.40/x
  3. Step 3: Cross multiply
    428,124.30x = 642,316.02 × 161,966.40
  4. Step 4: Simplify right side
    428,124.30x = 104,033,613,421.73
  5. Step 5: Solve for x
    x = 104,033,613,421.73/428,124.30
  6. Step 6: Final answer
    x = 242,998.62

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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.