Home / 430,375.02-645,598.65-130,858.20

Finding the Fourth Proportional to 430,375.02, 645,598.65 and 130,858.20

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Solution

The fourth proportional to 430,375.02, 645,598.65 and 130,858.20 is: 196,298.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,375.02 : 645,598.65 = 130,858.20 : x
  2. Step 2: Convert to fraction form
    430,375.02/645,598.65 = 130,858.20/x
  3. Step 3: Cross multiply
    430,375.02x = 645,598.65 × 130,858.20
  4. Step 4: Simplify right side
    430,375.02x = 84,481,877,261.43
  5. Step 5: Solve for x
    x = 84,481,877,261.43/430,375.02
  6. Step 6: Final answer
    x = 196,298.28

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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.