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Finding the Fourth Proportional to 387,148.31, 580,693.76 and 162,499.67

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Solution

The fourth proportional to 387,148.31, 580,693.76 and 162,499.67 is: 243,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,148.31 : 580,693.76 = 162,499.67 : x
  2. Step 2: Convert to fraction form
    387,148.31/580,693.76 = 162,499.67/x
  3. Step 3: Cross multiply
    387,148.31x = 580,693.76 × 162,499.67
  4. Step 4: Simplify right side
    387,148.31x = 94,362,543,442.07
  5. Step 5: Solve for x
    x = 94,362,543,442.07/387,148.31
  6. Step 6: Final answer
    x = 243,737.45

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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.