Home / 219,264.78-302,553.05-128,586.50

Finding the Fourth Proportional to 219,264.78, 302,553.05 and 128,586.50

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Solution

The fourth proportional to 219,264.78, 302,553.05 and 128,586.50 is: 177,430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,264.78 : 302,553.05 = 128,586.50 : x
  2. Step 2: Convert to fraction form
    219,264.78/302,553.05 = 128,586.50/x
  3. Step 3: Cross multiply
    219,264.78x = 302,553.05 × 128,586.50
  4. Step 4: Simplify right side
    219,264.78x = 38,904,235,608.13
  5. Step 5: Solve for x
    x = 38,904,235,608.13/219,264.78
  6. Step 6: Final answer
    x = 177,430.39

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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.