Home / 428,656.53-642,582.49-144,148.14

Finding the Fourth Proportional to 428,656.53, 642,582.49 and 144,148.14

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Solution

The fourth proportional to 428,656.53, 642,582.49 and 144,148.14 is: 216,086.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,656.53 : 642,582.49 = 144,148.14 : x
  2. Step 2: Convert to fraction form
    428,656.53/642,582.49 = 144,148.14/x
  3. Step 3: Cross multiply
    428,656.53x = 642,582.49 × 144,148.14
  4. Step 4: Simplify right side
    428,656.53x = 92,627,070,730.07
  5. Step 5: Solve for x
    x = 92,627,070,730.07/428,656.53
  6. Step 6: Final answer
    x = 216,086.92

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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.