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Finding the Fourth Proportional to 397,547.72, 548,600.02 and 216,259.88

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Solution

The fourth proportional to 397,547.72, 548,600.02 and 216,259.88 is: 298,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,547.72 : 548,600.02 = 216,259.88 : x
  2. Step 2: Convert to fraction form
    397,547.72/548,600.02 = 216,259.88/x
  3. Step 3: Cross multiply
    397,547.72x = 548,600.02 × 216,259.88
  4. Step 4: Simplify right side
    397,547.72x = 118,640,174,493.20
  5. Step 5: Solve for x
    x = 118,640,174,493.20/397,547.72
  6. Step 6: Final answer
    x = 298,430.02

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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.