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Finding the Fourth Proportional to 612,000.20, 918,000.30 and 237,780.20

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Solution

The fourth proportional to 612,000.20, 918,000.30 and 237,780.20 is: 356,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,000.20 : 918,000.30 = 237,780.20 : x
  2. Step 2: Convert to fraction form
    612,000.20/918,000.30 = 237,780.20/x
  3. Step 3: Cross multiply
    612,000.20x = 918,000.30 × 237,780.20
  4. Step 4: Simplify right side
    612,000.20x = 218,282,294,934.06
  5. Step 5: Solve for x
    x = 218,282,294,934.06/612,000.20
  6. Step 6: Final answer
    x = 356,670.30

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