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Finding the Fourth Proportional to 353,051.82, 529,411.34 and 128,253.74

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Solution

The fourth proportional to 353,051.82, 529,411.34 and 128,253.74 is: 192,320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,051.82 : 529,411.34 = 128,253.74 : x
  2. Step 2: Convert to fraction form
    353,051.82/529,411.34 = 128,253.74/x
  3. Step 3: Cross multiply
    353,051.82x = 529,411.34 × 128,253.74
  4. Step 4: Simplify right side
    353,051.82x = 67,898,984,353.41
  5. Step 5: Solve for x
    x = 67,898,984,353.41/353,051.82
  6. Step 6: Final answer
    x = 192,320.17

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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.