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Finding the Fourth Proportional to 390,297.06, 538,602.92 and 220,527.54

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Solution

The fourth proportional to 390,297.06, 538,602.92 and 220,527.54 is: 304,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,297.06 : 538,602.92 = 220,527.54 : x
  2. Step 2: Convert to fraction form
    390,297.06/538,602.92 = 220,527.54/x
  3. Step 3: Cross multiply
    390,297.06x = 538,602.92 × 220,527.54
  4. Step 4: Simplify right side
    390,297.06x = 118,776,773,188.77
  5. Step 5: Solve for x
    x = 118,776,773,188.77/390,297.06
  6. Step 6: Final answer
    x = 304,324.03

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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.