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Finding the Fourth Proportional to 426,504.69, 639,441.02 and 201,602.32

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Solution

The fourth proportional to 426,504.69, 639,441.02 and 201,602.32 is: 302,254.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,504.69 : 639,441.02 = 201,602.32 : x
  2. Step 2: Convert to fraction form
    426,504.69/639,441.02 = 201,602.32/x
  3. Step 3: Cross multiply
    426,504.69x = 639,441.02 × 201,602.32
  4. Step 4: Simplify right side
    426,504.69x = 128,912,792,040.57
  5. Step 5: Solve for x
    x = 128,912,792,040.57/426,504.69
  6. Step 6: Final answer
    x = 302,254.10

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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.