Home / 219,047.04-302,227.47-128,354.31

Finding the Fourth Proportional to 219,047.04, 302,227.47 and 128,354.31

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Solution

The fourth proportional to 219,047.04, 302,227.47 and 128,354.31 is: 177,095.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,047.04 : 302,227.47 = 128,354.31 : x
  2. Step 2: Convert to fraction form
    219,047.04/302,227.47 = 128,354.31/x
  3. Step 3: Cross multiply
    219,047.04x = 302,227.47 × 128,354.31
  4. Step 4: Simplify right side
    219,047.04x = 38,792,198,374.90
  5. Step 5: Solve for x
    x = 38,792,198,374.90/219,047.04
  6. Step 6: Final answer
    x = 177,095.29

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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.