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Finding the Fourth Proportional to 154,356.84, 212,808.24 and 111,300.30

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Solution

The fourth proportional to 154,356.84, 212,808.24 and 111,300.30 is: 153,447.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,356.84 : 212,808.24 = 111,300.30 : x
  2. Step 2: Convert to fraction form
    154,356.84/212,808.24 = 111,300.30/x
  3. Step 3: Cross multiply
    154,356.84x = 212,808.24 × 111,300.30
  4. Step 4: Simplify right side
    154,356.84x = 23,685,620,954.47
  5. Step 5: Solve for x
    x = 23,685,620,954.47/154,356.84
  6. Step 6: Final answer
    x = 153,447.17

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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.