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Finding the Fourth Proportional to 281,572, 388,579.06 and 154,247.60

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Solution

The fourth proportional to 281,572, 388,579.06 and 154,247.60 is: 212,867.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,572 : 388,579.06 = 154,247.60 : x
  2. Step 2: Convert to fraction form
    281,572/388,579.06 = 154,247.60/x
  3. Step 3: Cross multiply
    281,572x = 388,579.06 × 154,247.60
  4. Step 4: Simplify right side
    281,572x = 59,937,387,415.26
  5. Step 5: Solve for x
    x = 59,937,387,415.26/281,572
  6. Step 6: Final answer
    x = 212,867.00

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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.