Home / 430,226.20-645,339.30-243,602.20

Finding the Fourth Proportional to 430,226.20, 645,339.30 and 243,602.20

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Solution

The fourth proportional to 430,226.20, 645,339.30 and 243,602.20 is: 365,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,226.20 : 645,339.30 = 243,602.20 : x
  2. Step 2: Convert to fraction form
    430,226.20/645,339.30 = 243,602.20/x
  3. Step 3: Cross multiply
    430,226.20x = 645,339.30 × 243,602.20
  4. Step 4: Simplify right side
    430,226.20x = 157,206,073,226.46
  5. Step 5: Solve for x
    x = 157,206,073,226.46/430,226.20
  6. Step 6: Final answer
    x = 365,403.30

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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.