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Finding the Fourth Proportional to 642,254.70, 963,090.45 and 242,762.70

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Solution

The fourth proportional to 642,254.70, 963,090.45 and 242,762.70 is: 364,033.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,254.70 : 963,090.45 = 242,762.70 : x
  2. Step 2: Convert to fraction form
    642,254.70/963,090.45 = 242,762.70/x
  3. Step 3: Cross multiply
    642,254.70x = 963,090.45 × 242,762.70
  4. Step 4: Simplify right side
    642,254.70x = 233,802,437,986.22
  5. Step 5: Solve for x
    x = 233,802,437,986.22/642,254.70
  6. Step 6: Final answer
    x = 364,033.83

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1.5x scale

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.