Home / 219,117.28-302,401.20-123,619.36

Finding the Fourth Proportional to 219,117.28, 302,401.20 and 123,619.36

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Solution

The fourth proportional to 219,117.28, 302,401.20 and 123,619.36 is: 170,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,117.28 : 302,401.20 = 123,619.36 : x
  2. Step 2: Convert to fraction form
    219,117.28/302,401.20 = 123,619.36/x
  3. Step 3: Cross multiply
    219,117.28x = 302,401.20 × 123,619.36
  4. Step 4: Simplify right side
    219,117.28x = 37,382,642,807.23
  5. Step 5: Solve for x
    x = 37,382,642,807.23/219,117.28
  6. Step 6: Final answer
    x = 170,605.64

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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.