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Finding the Fourth Proportional to 268,848.84, 370,968 and 154,106.40

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Solution

The fourth proportional to 268,848.84, 370,968 and 154,106.40 is: 212,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,848.84 : 370,968 = 154,106.40 : x
  2. Step 2: Convert to fraction form
    268,848.84/370,968 = 154,106.40/x
  3. Step 3: Cross multiply
    268,848.84x = 370,968 × 154,106.40
  4. Step 4: Simplify right side
    268,848.84x = 57,168,542,995.20
  5. Step 5: Solve for x
    x = 57,168,542,995.20/268,848.84
  6. Step 6: Final answer
    x = 212,641.96

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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.