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Finding the Fourth Proportional to 268,616.40, 370,661.52 and 155,418

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Solution

The fourth proportional to 268,616.40, 370,661.52 and 155,418 is: 214,460.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,616.40 : 370,661.52 = 155,418 : x
  2. Step 2: Convert to fraction form
    268,616.40/370,661.52 = 155,418/x
  3. Step 3: Cross multiply
    268,616.40x = 370,661.52 × 155,418
  4. Step 4: Simplify right side
    268,616.40x = 57,607,472,115.36
  5. Step 5: Solve for x
    x = 57,607,472,115.36/268,616.40
  6. Step 6: Final answer
    x = 214,460.00

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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.