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Finding the Fourth Proportional to 438,300.80, 657,067.20 and 297,603.20

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Solution

The fourth proportional to 438,300.80, 657,067.20 and 297,603.20 is: 446,144.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,300.80 : 657,067.20 = 297,603.20 : x
  2. Step 2: Convert to fraction form
    438,300.80/657,067.20 = 297,603.20/x
  3. Step 3: Cross multiply
    438,300.80x = 657,067.20 × 297,603.20
  4. Step 4: Simplify right side
    438,300.80x = 195,545,301,335.04
  5. Step 5: Solve for x
    x = 195,545,301,335.04/438,300.80
  6. Step 6: Final answer
    x = 446,144.07

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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.