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Finding the Fourth Proportional to 219,368.76, 302,712.30 and 123,862.20

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Solution

The fourth proportional to 219,368.76, 302,712.30 and 123,862.20 is: 170,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,368.76 : 302,712.30 = 123,862.20 : x
  2. Step 2: Convert to fraction form
    219,368.76/302,712.30 = 123,862.20/x
  3. Step 3: Cross multiply
    219,368.76x = 302,712.30 × 123,862.20
  4. Step 4: Simplify right side
    219,368.76x = 37,494,611,445.06
  5. Step 5: Solve for x
    x = 37,494,611,445.06/219,368.76
  6. Step 6: Final answer
    x = 170,920.47

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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.