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Finding the Fourth Proportional to 354,388.61, 531,533.12 and 101,690.63

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Solution

The fourth proportional to 354,388.61, 531,533.12 and 101,690.63 is: 152,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,388.61 : 531,533.12 = 101,690.63 : x
  2. Step 2: Convert to fraction form
    354,388.61/531,533.12 = 101,690.63/x
  3. Step 3: Cross multiply
    354,388.61x = 531,533.12 × 101,690.63
  4. Step 4: Simplify right side
    354,388.61x = 54,051,934,672.55
  5. Step 5: Solve for x
    x = 54,051,934,672.55/354,388.61
  6. Step 6: Final answer
    x = 152,521.65

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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.