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Finding the Fourth Proportional to 280,254.70, 386,760.84 and 152,937.28

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Solution

The fourth proportional to 280,254.70, 386,760.84 and 152,937.28 is: 211,058.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,254.70 : 386,760.84 = 152,937.28 : x
  2. Step 2: Convert to fraction form
    280,254.70/386,760.84 = 152,937.28/x
  3. Step 3: Cross multiply
    280,254.70x = 386,760.84 × 152,937.28
  4. Step 4: Simplify right side
    280,254.70x = 59,150,150,880.12
  5. Step 5: Solve for x
    x = 59,150,150,880.12/280,254.70
  6. Step 6: Final answer
    x = 211,058.55

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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.