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Finding the Fourth Proportional to 287,292.32, 396,459.70 and 158,228.34

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Solution

The fourth proportional to 287,292.32, 396,459.70 and 158,228.34 is: 218,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,292.32 : 396,459.70 = 158,228.34 : x
  2. Step 2: Convert to fraction form
    287,292.32/396,459.70 = 158,228.34/x
  3. Step 3: Cross multiply
    287,292.32x = 396,459.70 × 158,228.34
  4. Step 4: Simplify right side
    287,292.32x = 62,731,158,325.60
  5. Step 5: Solve for x
    x = 62,731,158,325.60/287,292.32
  6. Step 6: Final answer
    x = 218,353.06

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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.