Home / 219,297.24-302,632.76-128,654.78

Finding the Fourth Proportional to 219,297.24, 302,632.76 and 128,654.78

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Solution

The fourth proportional to 219,297.24, 302,632.76 and 128,654.78 is: 177,545.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,297.24 : 302,632.76 = 128,654.78 : x
  2. Step 2: Convert to fraction form
    219,297.24/302,632.76 = 128,654.78/x
  3. Step 3: Cross multiply
    219,297.24x = 302,632.76 × 128,654.78
  4. Step 4: Simplify right side
    219,297.24x = 38,935,151,158.59
  5. Step 5: Solve for x
    x = 38,935,151,158.59/219,297.24
  6. Step 6: Final answer
    x = 177,545.10

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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.