Home / 431,928,009.60-647,948,846.40-159,490,147.20

Finding the Fourth Proportional to 431,928,009.60, 647,948,846.40 and 159,490,147.20

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Solution

The fourth proportional to 431,928,009.60, 647,948,846.40 and 159,490,147.20 is: 239,256,206.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,928,009.60 : 647,948,846.40 = 159,490,147.20 : x
  2. Step 2: Convert to fraction form
    431,928,009.60/647,948,846.40 = 159,490,147.20/x
  3. Step 3: Cross multiply
    431,928,009.60x = 647,948,846.40 × 159,490,147.20
  4. Step 4: Simplify right side
    431,928,009.60x = 103,341,456,890,406,176
  5. Step 5: Solve for x
    x = 103,341,456,890,406,176/431,928,009.60
  6. Step 6: Final answer
    x = 239,256,206.11

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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.