Home / 219,045.56-302,177.43-128,345.19

Finding the Fourth Proportional to 219,045.56, 302,177.43 and 128,345.19

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Solution

The fourth proportional to 219,045.56, 302,177.43 and 128,345.19 is: 177,054.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,045.56 : 302,177.43 = 128,345.19 : x
  2. Step 2: Convert to fraction form
    219,045.56/302,177.43 = 128,345.19/x
  3. Step 3: Cross multiply
    219,045.56x = 302,177.43 × 128,345.19
  4. Step 4: Simplify right side
    219,045.56x = 38,783,019,667.06
  5. Step 5: Solve for x
    x = 38,783,019,667.06/219,045.56
  6. Step 6: Final answer
    x = 177,054.58

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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.