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Finding the Fourth Proportional to 163,531.40, 245,297.10 and 51,220.40

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Solution

The fourth proportional to 163,531.40, 245,297.10 and 51,220.40 is: 76,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,531.40 : 245,297.10 = 51,220.40 : x
  2. Step 2: Convert to fraction form
    163,531.40/245,297.10 = 51,220.40/x
  3. Step 3: Cross multiply
    163,531.40x = 245,297.10 × 51,220.40
  4. Step 4: Simplify right side
    163,531.40x = 12,564,215,580.84
  5. Step 5: Solve for x
    x = 12,564,215,580.84/163,531.40
  6. Step 6: Final answer
    x = 76,830.60

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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.