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Finding the Fourth Proportional to 484,332.70, 668,368.70 and 280,392.25

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Solution

The fourth proportional to 484,332.70, 668,368.70 and 280,392.25 is: 386,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,332.70 : 668,368.70 = 280,392.25 : x
  2. Step 2: Convert to fraction form
    484,332.70/668,368.70 = 280,392.25/x
  3. Step 3: Cross multiply
    484,332.70x = 668,368.70 × 280,392.25
  4. Step 4: Simplify right side
    484,332.70x = 187,405,400,549.69
  5. Step 5: Solve for x
    x = 187,405,400,549.69/484,332.70
  6. Step 6: Final answer
    x = 386,935.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.