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Finding the Fourth Proportional to 288,994.32, 398,817.90 and 174,272.40

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Solution

The fourth proportional to 288,994.32, 398,817.90 and 174,272.40 is: 240,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,994.32 : 398,817.90 = 174,272.40 : x
  2. Step 2: Convert to fraction form
    288,994.32/398,817.90 = 174,272.40/x
  3. Step 3: Cross multiply
    288,994.32x = 398,817.90 × 174,272.40
  4. Step 4: Simplify right side
    288,994.32x = 69,502,952,595.96
  5. Step 5: Solve for x
    x = 69,502,952,595.96/288,994.32
  6. Step 6: Final answer
    x = 240,499.37

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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.