Home / 438,726.04-605,386.27-257,371.80

Finding the Fourth Proportional to 438,726.04, 605,386.27 and 257,371.80

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Solution

The fourth proportional to 438,726.04, 605,386.27 and 257,371.80 is: 355,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,726.04 : 605,386.27 = 257,371.80 : x
  2. Step 2: Convert to fraction form
    438,726.04/605,386.27 = 257,371.80/x
  3. Step 3: Cross multiply
    438,726.04x = 605,386.27 × 257,371.80
  4. Step 4: Simplify right side
    438,726.04x = 155,809,354,005.19
  5. Step 5: Solve for x
    x = 155,809,354,005.19/438,726.04
  6. Step 6: Final answer
    x = 355,140.43

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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.