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Finding the Fourth Proportional to 438,501.84, 605,135.52 and 257,321.04

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Solution

The fourth proportional to 438,501.84, 605,135.52 and 257,321.04 is: 355,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,501.84 : 605,135.52 = 257,321.04 : x
  2. Step 2: Convert to fraction form
    438,501.84/605,135.52 = 257,321.04/x
  3. Step 3: Cross multiply
    438,501.84x = 605,135.52 × 257,321.04
  4. Step 4: Simplify right side
    438,501.84x = 155,714,101,347.34
  5. Step 5: Solve for x
    x = 155,714,101,347.34/438,501.84
  6. Step 6: Final answer
    x = 355,104.78

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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.