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Finding the Fourth Proportional to 219,315, 302,654.70 and 118,713.72

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Solution

The fourth proportional to 219,315, 302,654.70 and 118,713.72 is: 163,824.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,315 : 302,654.70 = 118,713.72 : x
  2. Step 2: Convert to fraction form
    219,315/302,654.70 = 118,713.72/x
  3. Step 3: Cross multiply
    219,315x = 302,654.70 × 118,713.72
  4. Step 4: Simplify right side
    219,315x = 35,929,265,312.48
  5. Step 5: Solve for x
    x = 35,929,265,312.48/219,315
  6. Step 6: Final answer
    x = 163,824.93

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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.