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Finding the Fourth Proportional to 346,089.60, 518,750.40 and 135,657.60

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Solution

The fourth proportional to 346,089.60, 518,750.40 and 135,657.60 is: 203,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,089.60 : 518,750.40 = 135,657.60 : x
  2. Step 2: Convert to fraction form
    346,089.60/518,750.40 = 135,657.60/x
  3. Step 3: Cross multiply
    346,089.60x = 518,750.40 × 135,657.60
  4. Step 4: Simplify right side
    346,089.60x = 70,372,434,263.04
  5. Step 5: Solve for x
    x = 70,372,434,263.04/346,089.60
  6. Step 6: Final answer
    x = 203,335.88

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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.