Home / 390,304.56-538,613.26-220,535.04

Finding the Fourth Proportional to 390,304.56, 538,613.26 and 220,535.04

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Solution

The fourth proportional to 390,304.56, 538,613.26 and 220,535.04 is: 304,334.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,304.56 : 538,613.26 = 220,535.04 : x
  2. Step 2: Convert to fraction form
    390,304.56/538,613.26 = 220,535.04/x
  3. Step 3: Cross multiply
    390,304.56x = 538,613.26 × 220,535.04
  4. Step 4: Simplify right side
    390,304.56x = 118,783,096,838.63
  5. Step 5: Solve for x
    x = 118,783,096,838.63/390,304.56
  6. Step 6: Final answer
    x = 304,334.38

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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.