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Finding the Fourth Proportional to 612,598.40, 918,521.28 and 238,184.96

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Solution

The fourth proportional to 612,598.40, 918,521.28 and 238,184.96 is: 357,131.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,598.40 : 918,521.28 = 238,184.96 : x
  2. Step 2: Convert to fraction form
    612,598.40/918,521.28 = 238,184.96/x
  3. Step 3: Cross multiply
    612,598.40x = 918,521.28 × 238,184.96
  4. Step 4: Simplify right side
    612,598.40x = 218,777,954,335.95
  5. Step 5: Solve for x
    x = 218,777,954,335.95/612,598.40
  6. Step 6: Final answer
    x = 357,131.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.