Home / 287,409,612.96-396,625,410.72-155,250,602.64

Finding the Fourth Proportional to 287,409,612.96, 396,625,410.72 and 155,250,602.64

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Solution

The fourth proportional to 287,409,612.96, 396,625,410.72 and 155,250,602.64 is: 214,245,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,409,612.96 : 396,625,410.72 = 155,250,602.64 : x
  2. Step 2: Convert to fraction form
    287,409,612.96/396,625,410.72 = 155,250,602.64/x
  3. Step 3: Cross multiply
    287,409,612.96x = 396,625,410.72 × 155,250,602.64
  4. Step 4: Simplify right side
    287,409,612.96x = 61,576,334,036,617,512
  5. Step 5: Solve for x
    x = 61,576,334,036,617,512/287,409,612.96
  6. Step 6: Final answer
    x = 214,245,909.88

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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.