Home / 219,228.12-302,536.22-128,565.63

Finding the Fourth Proportional to 219,228.12, 302,536.22 and 128,565.63

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Solution

The fourth proportional to 219,228.12, 302,536.22 and 128,565.63 is: 177,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,228.12 : 302,536.22 = 128,565.63 : x
  2. Step 2: Convert to fraction form
    219,228.12/302,536.22 = 128,565.63/x
  3. Step 3: Cross multiply
    219,228.12x = 302,536.22 × 128,565.63
  4. Step 4: Simplify right side
    219,228.12x = 38,895,759,079.29
  5. Step 5: Solve for x
    x = 38,895,759,079.29/219,228.12
  6. Step 6: Final answer
    x = 177,421.40

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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.