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Finding the Fourth Proportional to 280,551.56, 387,146.58 and 153,202.28

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Solution

The fourth proportional to 280,551.56, 387,146.58 and 153,202.28 is: 211,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,551.56 : 387,146.58 = 153,202.28 : x
  2. Step 2: Convert to fraction form
    280,551.56/387,146.58 = 153,202.28/x
  3. Step 3: Cross multiply
    280,551.56x = 387,146.58 × 153,202.28
  4. Step 4: Simplify right side
    280,551.56x = 59,311,738,750.20
  5. Step 5: Solve for x
    x = 59,311,738,750.20/280,551.56
  6. Step 6: Final answer
    x = 211,411.19

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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.