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Finding the Fourth Proportional to 343,533.60, 515,407.68 and 154,152.72

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Solution

The fourth proportional to 343,533.60, 515,407.68 and 154,152.72 is: 231,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,533.60 : 515,407.68 = 154,152.72 : x
  2. Step 2: Convert to fraction form
    343,533.60/515,407.68 = 154,152.72/x
  3. Step 3: Cross multiply
    343,533.60x = 515,407.68 × 154,152.72
  4. Step 4: Simplify right side
    343,533.60x = 79,451,495,780.89
  5. Step 5: Solve for x
    x = 79,451,495,780.89/343,533.60
  6. Step 6: Final answer
    x = 231,277.22

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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.