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Finding the Fourth Proportional to 438,993, 605,810.34 and 237,789

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Solution

The fourth proportional to 438,993, 605,810.34 and 237,789 is: 328,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,993 : 605,810.34 = 237,789 : x
  2. Step 2: Convert to fraction form
    438,993/605,810.34 = 237,789/x
  3. Step 3: Cross multiply
    438,993x = 605,810.34 × 237,789
  4. Step 4: Simplify right side
    438,993x = 144,055,034,938.26
  5. Step 5: Solve for x
    x = 144,055,034,938.26/438,993
  6. Step 6: Final answer
    x = 328,148.82

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1.5x scale

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.