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Finding the Fourth Proportional to 578,064.60, 866,708.10 and 308,237.40

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Solution

The fourth proportional to 578,064.60, 866,708.10 and 308,237.40 is: 462,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,064.60 : 866,708.10 = 308,237.40 : x
  2. Step 2: Convert to fraction form
    578,064.60/866,708.10 = 308,237.40/x
  3. Step 3: Cross multiply
    578,064.60x = 866,708.10 × 308,237.40
  4. Step 4: Simplify right side
    578,064.60x = 267,151,851,302.94
  5. Step 5: Solve for x
    x = 267,151,851,302.94/578,064.60
  6. Step 6: Final answer
    x = 462,148.78

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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.