Home / 219,047.45-302,294.63-138,445.70

Finding the Fourth Proportional to 219,047.45, 302,294.63 and 138,445.70

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Solution

The fourth proportional to 219,047.45, 302,294.63 and 138,445.70 is: 191,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,047.45 : 302,294.63 = 138,445.70 : x
  2. Step 2: Convert to fraction form
    219,047.45/302,294.63 = 138,445.70/x
  3. Step 3: Cross multiply
    219,047.45x = 302,294.63 × 138,445.70
  4. Step 4: Simplify right side
    219,047.45x = 41,851,390,491.23
  5. Step 5: Solve for x
    x = 41,851,390,491.23/219,047.45
  6. Step 6: Final answer
    x = 191,060.85

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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.