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Finding the Fourth Proportional to 488,300.40, 731,867.40 and 251,521.20

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Solution

The fourth proportional to 488,300.40, 731,867.40 and 251,521.20 is: 376,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,300.40 : 731,867.40 = 251,521.20 : x
  2. Step 2: Convert to fraction form
    488,300.40/731,867.40 = 251,521.20/x
  3. Step 3: Cross multiply
    488,300.40x = 731,867.40 × 251,521.20
  4. Step 4: Simplify right side
    488,300.40x = 184,080,166,688.88
  5. Step 5: Solve for x
    x = 184,080,166,688.88/488,300.40
  6. Step 6: Final answer
    x = 376,981.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.