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Finding the Fourth Proportional to 357,995.20, 537,005.76 and 121,360.72

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Solution

The fourth proportional to 357,995.20, 537,005.76 and 121,360.72 is: 182,045.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,995.20 : 537,005.76 = 121,360.72 : x
  2. Step 2: Convert to fraction form
    357,995.20/537,005.76 = 121,360.72/x
  3. Step 3: Cross multiply
    357,995.20x = 537,005.76 × 121,360.72
  4. Step 4: Simplify right side
    357,995.20x = 65,171,405,677.75
  5. Step 5: Solve for x
    x = 65,171,405,677.75/357,995.20
  6. Step 6: Final answer
    x = 182,045.47

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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.