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Finding the Fourth Proportional to 280,150.74, 386,626.28 and 159,303.28

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Solution

The fourth proportional to 280,150.74, 386,626.28 and 159,303.28 is: 219,848.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,150.74 : 386,626.28 = 159,303.28 : x
  2. Step 2: Convert to fraction form
    280,150.74/386,626.28 = 159,303.28/x
  3. Step 3: Cross multiply
    280,150.74x = 386,626.28 × 159,303.28
  4. Step 4: Simplify right side
    280,150.74x = 61,590,834,538.20
  5. Step 5: Solve for x
    x = 61,590,834,538.20/280,150.74
  6. Step 6: Final answer
    x = 219,848.91

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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.