Home / 268,639.62-370,681.56-155,440.50

Finding the Fourth Proportional to 268,639.62, 370,681.56 and 155,440.50

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Solution

The fourth proportional to 268,639.62, 370,681.56 and 155,440.50 is: 214,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,639.62 : 370,681.56 = 155,440.50 : x
  2. Step 2: Convert to fraction form
    268,639.62/370,681.56 = 155,440.50/x
  3. Step 3: Cross multiply
    268,639.62x = 370,681.56 × 155,440.50
  4. Step 4: Simplify right side
    268,639.62x = 57,618,927,027.18
  5. Step 5: Solve for x
    x = 57,618,927,027.18/268,639.62
  6. Step 6: Final answer
    x = 214,484.10

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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.