Home / 430,602.64-645,997.31-131,075.40

Finding the Fourth Proportional to 430,602.64, 645,997.31 and 131,075.40

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Solution

The fourth proportional to 430,602.64, 645,997.31 and 131,075.40 is: 196,641.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,602.64 : 645,997.31 = 131,075.40 : x
  2. Step 2: Convert to fraction form
    430,602.64/645,997.31 = 131,075.40/x
  3. Step 3: Cross multiply
    430,602.64x = 645,997.31 × 131,075.40
  4. Step 4: Simplify right side
    430,602.64x = 84,674,353,622.41
  5. Step 5: Solve for x
    x = 84,674,353,622.41/430,602.64
  6. Step 6: Final answer
    x = 196,641.51

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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.