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Finding the Fourth Proportional to 430,355.25, 645,636.56 and 134,867.25

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Solution

The fourth proportional to 430,355.25, 645,636.56 and 134,867.25 is: 202,333.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,355.25 : 645,636.56 = 134,867.25 : x
  2. Step 2: Convert to fraction form
    430,355.25/645,636.56 = 134,867.25/x
  3. Step 3: Cross multiply
    430,355.25x = 645,636.56 × 134,867.25
  4. Step 4: Simplify right side
    430,355.25x = 87,075,226,672.32
  5. Step 5: Solve for x
    x = 87,075,226,672.32/430,355.25
  6. Step 6: Final answer
    x = 202,333.37

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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.