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Finding the Fourth Proportional to 219,218.50, 302,521.80 and 118,616.50

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Solution

The fourth proportional to 219,218.50, 302,521.80 and 118,616.50 is: 163,690.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,218.50 : 302,521.80 = 118,616.50 : x
  2. Step 2: Convert to fraction form
    219,218.50/302,521.80 = 118,616.50/x
  3. Step 3: Cross multiply
    219,218.50x = 302,521.80 × 118,616.50
  4. Step 4: Simplify right side
    219,218.50x = 35,884,077,089.70
  5. Step 5: Solve for x
    x = 35,884,077,089.70/219,218.50
  6. Step 6: Final answer
    x = 163,690.92

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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.