Home / 442,905.40-664,358.10-162,386.20

Finding the Fourth Proportional to 442,905.40, 664,358.10 and 162,386.20

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Solution

The fourth proportional to 442,905.40, 664,358.10 and 162,386.20 is: 243,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,905.40 : 664,358.10 = 162,386.20 : x
  2. Step 2: Convert to fraction form
    442,905.40/664,358.10 = 162,386.20/x
  3. Step 3: Cross multiply
    442,905.40x = 664,358.10 × 162,386.20
  4. Step 4: Simplify right side
    442,905.40x = 107,882,587,298.22
  5. Step 5: Solve for x
    x = 107,882,587,298.22/442,905.40
  6. Step 6: Final answer
    x = 243,579.30

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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.