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Finding the Fourth Proportional to 219,432.57, 302,816.79 and 118,830.57

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Solution

The fourth proportional to 219,432.57, 302,816.79 and 118,830.57 is: 163,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,432.57 : 302,816.79 = 118,830.57 : x
  2. Step 2: Convert to fraction form
    219,432.57/302,816.79 = 118,830.57/x
  3. Step 3: Cross multiply
    219,432.57x = 302,816.79 × 118,830.57
  4. Step 4: Simplify right side
    219,432.57x = 35,983,891,761.27
  5. Step 5: Solve for x
    x = 35,983,891,761.27/219,432.57
  6. Step 6: Final answer
    x = 163,986.10

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1.5x scale

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.