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Finding the Fourth Proportional to 578,143.20, 866,955.60 and 262,437.60

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Solution

The fourth proportional to 578,143.20, 866,955.60 and 262,437.60 is: 393,538.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,143.20 : 866,955.60 = 262,437.60 : x
  2. Step 2: Convert to fraction form
    578,143.20/866,955.60 = 262,437.60/x
  3. Step 3: Cross multiply
    578,143.20x = 866,955.60 × 262,437.60
  4. Step 4: Simplify right side
    578,143.20x = 227,521,746,970.56
  5. Step 5: Solve for x
    x = 227,521,746,970.56/578,143.20
  6. Step 6: Final answer
    x = 393,538.74

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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.