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Finding the Fourth Proportional to 163,430.36, 225,442.87 and 151,870.86

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Solution

The fourth proportional to 163,430.36, 225,442.87 and 151,870.86 is: 209,497.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,430.36 : 225,442.87 = 151,870.86 : x
  2. Step 2: Convert to fraction form
    163,430.36/225,442.87 = 151,870.86/x
  3. Step 3: Cross multiply
    163,430.36x = 225,442.87 × 151,870.86
  4. Step 4: Simplify right side
    163,430.36x = 34,238,202,737.61
  5. Step 5: Solve for x
    x = 34,238,202,737.61/163,430.36
  6. Step 6: Final answer
    x = 209,497.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.