Home / 287,619.32-397,018.86-174,439.64

Finding the Fourth Proportional to 287,619.32, 397,018.86 and 174,439.64

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Solution

The fourth proportional to 287,619.32, 397,018.86 and 174,439.64 is: 240,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,619.32 : 397,018.86 = 174,439.64 : x
  2. Step 2: Convert to fraction form
    287,619.32/397,018.86 = 174,439.64/x
  3. Step 3: Cross multiply
    287,619.32x = 397,018.86 × 174,439.64
  4. Step 4: Simplify right side
    287,619.32x = 69,255,827,011.61
  5. Step 5: Solve for x
    x = 69,255,827,011.61/287,619.32
  6. Step 6: Final answer
    x = 240,789.90

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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.