Home / 428,377.32-642,572.64-162,263.16

Finding the Fourth Proportional to 428,377.32, 642,572.64 and 162,263.16

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Solution

The fourth proportional to 428,377.32, 642,572.64 and 162,263.16 is: 243,397.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,377.32 : 642,572.64 = 162,263.16 : x
  2. Step 2: Convert to fraction form
    428,377.32/642,572.64 = 162,263.16/x
  3. Step 3: Cross multiply
    428,377.32x = 642,572.64 × 162,263.16
  4. Step 4: Simplify right side
    428,377.32x = 104,265,867,095.94
  5. Step 5: Solve for x
    x = 104,265,867,095.94/428,377.32
  6. Step 6: Final answer
    x = 243,397.26

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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.